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Characteristic imaging features of body packers: a pictorial essay

Ab Hamid S, Abd Rashid SN, Mohd Saini S

Jpn J Radiol, 2012 Jun;30(5):386-92.
PMID: 22415809 DOI: 10.1007/s11604-012-0069-4

The drug-trafficking business has risen tremendously because of the current increased demand for illegal narcotics. The smugglers conceal the drugs in their bodies (body packers) in order to bypass the tight security at international borders. A suspected body packer will normally be sent to the hospital for imaging investigations to confirm the presence of drugs in the body. Radiologists, therefore, need to be familiar with and able to identify drug packets within the human body because they shoulder the legal responsibilities. This pictorial essay describes the characteristic imaging features of drug packets within the gastrointestinal tract.

Matched MeSH terms: Crime*
Statistical analysis of vehicle theft crime in peninsular Malaysia using negative binomial regression model

Ahmad Mahir Razali, Nurulkamal Masseran, Noriszura Ismail, Malina Zulkifli

Sains Malaysiana, 2015;44:1363-1370.

The aim of this paper was to identify the determinants that influence vehicle theft by applying a negative binomial regression model. The identification of these determinants is very important to policy-makers, car-makers and car owners, as they can be used to establish practical steps for preventing or at least limiting vehicle thefts. In addition, this paper also proposed a crime mapping application that allows us to identify the most risky areas for vehicle theft. The results from this study can be utilized by local authorities as well as management of internal resource planning of insurance companies in planning effective strategies to reduce vehicle theft. Indirectly, this paper has built ingenuity by combining information obtained from the database of Jabatan Perangkaan Malaysia and insurance companies to pioneer the development of location map of vehicle theft in Malaysia.

Matched MeSH terms: Crime
Fulltext Aggression following benzodiazepine ingestion in a forensic psychiatric patient: a case report

Ahmad Nabil Md Rosli, Singh, Suarn

ASEAN Journal of Psychiatry, 2015;16(2):241-244.
MyJurnal

The incidence of benzodiazepine paradoxical reaction is uncommon. It may be implicated with crime as will be described in this case report. Method: We report a 37 year-old schizophrenia patient who was detained by the authority under Section 392/397 of Penal Code assaulting a lady using sharp weapon. He had history of illicit substance abuse and benzodiazepine dependence with significant history of aggression associated with benzodiazepine. Just prior to the incident, he took a significant amount of various types of benzodiazepine and suffered from amnesia of that event. During the time of the offense, he was in remission as far as schizophrenia is concerned. Result: He was under the forensic psychiatric care and observation at Hospital Bahagia Ulu Kinta (HBUK). He developed withdrawal symptoms of benzodiazepine in the ward. Conclusion: He was found by the expert team to be under the influence of benzodiazepine during the offence. The role of benzodiazepine and relevant factors leading to aggression will be discussed in this manuscript.

Matched MeSH terms: Crime
Fulltext A metamodel for mobile forensics investigation domain

Ali A, Abd Razak S, Othman SH, Mohammed A, Saeed F

PLoS One, 2017;12(4):e0176223.
PMID: 28445486 DOI: 10.1371/journal.pone.0176223

With the rapid development of technology, mobile phones have become an essential tool in terms of crime fighting and criminal investigation. However, many mobile forensics investigators face difficulties with the investigation process in their domain. These difficulties are due to the heavy reliance of the forensics field on knowledge which, although a valuable resource, is scattered and widely dispersed. The wide dispersion of mobile forensics knowledge not only makes investigation difficult for new investigators, resulting in substantial waste of time, but also leads to ambiguity in the concepts and terminologies of the mobile forensics domain. This paper developed an approach for mobile forensics domain based on metamodeling. The developed approach contributes to identify common concepts of mobile forensics through a development of the Mobile Forensics Metamodel (MFM). In addion, it contributes to simplifying the investigation process and enables investigation teams to capture and reuse specialized forensic knowledge, thereby supporting the training and knowledge management activities. Furthermore, it reduces the difficulty and ambiguity in the mobile forensics domain. A validation process was performed to ensure the completeness and correctness of the MFM. The validation was conducted using two techniques for improvements and adjustments to the metamodel. The last version of the adjusted metamodel was named MFM 1.2.

Matched MeSH terms: Crime
Fulltext Hybrid support vector regression and autoregressive integrated moving average models improved by particle swarm optimization for property crime rates forecasting with economic indicators

Alwee R, Shamsuddin SM, Sallehuddin R

ScientificWorldJournal, 2013;2013:951475.
PMID: 23766729 DOI: 10.1155/2013/951475

Crimes forecasting is an important area in the field of criminology. Linear models, such as regression and econometric models, are commonly applied in crime forecasting. However, in real crimes data, it is common that the data consists of both linear and nonlinear components. A single model may not be sufficient to identify all the characteristics of the data. The purpose of this study is to introduce a hybrid model that combines support vector regression (SVR) and autoregressive integrated moving average (ARIMA) to be applied in crime rates forecasting. SVR is very robust with small training data and high-dimensional problem. Meanwhile, ARIMA has the ability to model several types of time series. However, the accuracy of the SVR model depends on values of its parameters, while ARIMA is not robust to be applied to small data sets. Therefore, to overcome this problem, particle swarm optimization is used to estimate the parameters of the SVR and ARIMA models. The proposed hybrid model is used to forecast the property crime rates of the United State based on economic indicators. The experimental results show that the proposed hybrid model is able to produce more accurate forecasting results as compared to the individual models.

Matched MeSH terms: Crime/trends*; Crime/statistics & numerical data*
Normative beliefs about aggression as a mediator of narcissistic exploitativeness and cyberbullying

Ang RP, Tan KA, Talib Mansor A

J Interpers Violence, 2011 Sep;26(13):2619-34.
PMID: 21156699 DOI: 10.1177/0886260510388286

The current study examined normative beliefs about aggression as a mediator between narcissistic exploitativeness and cyberbullying using two Asian adolescent samples from Singapore and Malaysia. Narcissistic exploitativeness was significantly and positively associated with cyberbullying and normative beliefs about aggression and normative beliefs about aggression were significantly and positively associated with cyberbullying. Normative beliefs about aggression were a significant partial mediator in both samples; these beliefs about aggression served as one possible mechanism of action by which narcissistic exploitativeness could exert its influence on cyberbullying. Findings extended previous empirical research by showing that such beliefs can be the mechanism of action not only in offline but also in online contexts and across cultures. Cyberbullying prevention and intervention efforts should include modification of norms and beliefs supportive of the legitimacy and acceptability of cyberbullying.

Matched MeSH terms: Crime Victims/psychology*; Crime Victims/statistics & numerical data
Fulltext Quality of life and tendency to aggression among relapsed and first time substance abusers: a comparative assessment study

Angela Shalini Muneeswaran, Sohayla M. Attalla, Eva Tan Lee Yin

Malaysian Journal of Medicine and Health Sciences, 2020;16(101):19-23.
MyJurnal

Introduction: Drug abuse is a prevalent issue in Malaysia, and a constant struggle to eradicate even among substance abusers who have received prior rehabilitation. Drug abuse has also been known to affect the quality of life of an individual, due to the stigma it carries. This research emphasized on studying the life quality of relapsed and first-time substance abusers in rehabilitation centres including their tendency towards aggression. Methods: A cross-sectional study was conducted to evaluate the current inpatients in Cure & Care Rehabilitation Centres (CCRC) in Peninsular Malaysia. Primary data was acquired using a self-administered questionnaire consisting of socio-demographic (Part A), quality of life (Part B) and aggression related questions (Part C). 417 individuals were selected through purposive sampling from five different centres. A statistical analysis was conducted using independent t-test, single linear re- gression and Kruskal-Wallis using SPSS version 25.0. Results: An analysis of the data presented no significant asso- ciation between quality of life and tendency of aggression among relapsed and first time substance abusers (p>0.05). Based on the analysis and the outcome, age influences the level of aggression (p=0.018) while quality of life is af- fected by education level (p=0.017). Marital status is a factor that affects both the level of aggression (p=0.015) and quality of life (p=0.043). Conclusion: The findings may contribute to law enforcements in reducing violent crimes committed by drug abusers and rehabilitation efforts by rehabilitation centres, by establishing demographic profiles in relation to quality of life and aggression.

Matched MeSH terms: Crime
Summary of an eleven-country study of socio-legal measures to combat drug abuse and related crime

Asuni T, Bruno F

Bull Narc, 1984 Jul-Sep;36(3):3-8.
PMID: 6570650

In a comparative study of a group of experimental and control subjects in Argentina, Brazil, Costa Rica, Japan, Jordan, Italy, Malaysia, Singapore and the United States of America (State of New York), and of the results of independent studies conducted in Sweden and the United Kingdom of Great Britain and Northern Ireland, a rather close association was found to exist between drug abuse, criminal behaviour and social attitudes to such problems. Both drug abuse and the socio-legal systems varied greatly in the countries involved. No correlation was found between the level of foreseen or actual harshness of the socio-legal system and the level of seriousness of drug abuse and its associated criminality, but there was a significant correlation between knowledge of the law and the efficacy of the socio-legal system. In each country informal control systems, such as the family, church, school, neighbourhood and work environment, were active. Approximately one half of the subjects that were interviewed from countries with the most punitive socio-legal systems perceived informal controls as harsh and punitive while in the other countries such controls were generally perceived as positive. The study encouraged the review, testing and implementation of alternative measures to penal sanctions, particularly with a view to creating a genuine therapeutic approach to correcting the deviant behaviour of drug abusers.

Matched MeSH terms: Crime/prevention & control*
Fulltext Prevalence of Postconcussion Syndrome after Mild Traumatic Brain Injury in Young Adults from a Single Neurosurgical Center in East Coast of Malaysia

Balakrishnan B, Rus RM, Chan KH, Martin AG, Awang MS

Asian J Neurosurg, 2019 4 3;14(1):201-205.
PMID: 30937035 DOI: 10.4103/ajns.AJNS_49_18

Context: Postconcussion syndrome (PCS) is a set of symptoms occurred after a mild traumatic brain injury (MTBI). Aims: This study aims to determine the prevalence of PCS in a young adult population from a single Neurological Centre in Malaysia's East Coast and to evaluate the factors associated with PCS in MTBI patients.
Settings and Design: This was a cross-sectional study conducted in a Neurological Centre at Hospital Tengku Ampuan Afzan, Kuantan, Pahang, Malaysia, from January 2016 to December 2016.
Subjects and Methods: A total of 209 patients; 133 males and 76 females, in the age range of 16-84 years, were randomly recruited for this study. All the selected patients were subjected to the checklist for diagnosis of PCS as per International Statistical Classification of Diseases and Related Health Problems 10th edition classification at a 2-week interval.
Statistical Analysis Used: Descriptive statistic and Multivariable Logistic Regression Model were used for frequency and percentage analyses of categorical variables, using SPSS version 23.0.
Results: Only 20 patients were identified with PCS. There were more female (70%) patients with PCS than the male (30%) patients. The prevalence of PCS for 2 weeks, 3 and 6 months since injuries were 9.6%, 8.1%, and 8.1% respectively. Majority (80%) of the patients were found to have PCS due to road traffic accidents, while the remaining were attributed to assault (15%), and falls (5%). Among the sample population, 25% were smokers, while 10% of them had either skull fracture or premorbidity.
Conclusion: Less than 10% of patients with MTBI had PCS after 6 months' following trauma. None of the variables tested were significant factors for the development of PCS symptoms.

Matched MeSH terms: Crime Victims
Death by 'ice': fatal methamphetamine intoxication of a body packer case detected by postmortem computed tomography (PMCT) and validated by autopsy

Bin Abdul Rashid SN, Rahim AS, Thali MJ, Flach PM

Forensic Sci Med Pathol, 2013 Mar;9(1):82-7.
PMID: 23404531 DOI: 10.1007/s12024-012-9395-1

Fatal acute methamphetamine (MA) poisoning in cases of internal drug trafficking is rarely described in the literature. This case study reports an MA 'body packer' who died from fatal methamphetamine intoxication due to leaking drug packages in the alimentary tract. The deceased was examined by postmortem computed tomography (PMCT), and the results were correlated to subsequent autopsy and toxicological findings. The deceased was arrested by the police when he was found disoriented in the city of Kuala Lumpur. He was transferred to the emergency department on suspicion of drug abuse. The initial drug screening was reactive for amphetamines. Shortly after admission to the hospital, he died despite rigorous resuscitation attempts. The postmortem plain chest and abdominal radiographs revealed multiple suspicious opacities in the gastrointestinal tract attributable to body packages. An unenhanced whole body PMCT revealed twenty-five drug packages, twenty-four in the stomach and one in the transverse colon. At least two were disintegrating, and therefore leaking. The autopsy findings were consistent with the PMCT results. Toxicology confirmed the diagnosis of fatal methamphetamine intoxication.

Matched MeSH terms: Crime*
Fulltext Leveraging transfer learning with deep learning for crime prediction

Butt UM, Letchmunan S, Hassan FH, Koh TW

PLoS One, 2024;19(4):e0296486.
PMID: 38630687 DOI: 10.1371/journal.pone.0296486

Crime remains a crucial concern regarding ensuring a safe and secure environment for the public. Numerous efforts have been made to predict crime, emphasizing the importance of employing deep learning approaches for precise predictions. However, sufficient crime data and resources for training state-of-the-art deep learning-based crime prediction systems pose a challenge. To address this issue, this study adopts the transfer learning paradigm. Moreover, this study fine-tunes state-of-the-art statistical and deep learning methods, including Simple Moving Averages (SMA), Weighted Moving Averages (WMA), Exponential Moving Averages (EMA), Long Short Term Memory (LSTM), Bi-directional Long Short Term Memory (BiLSTMs), and Convolutional Neural Networks and Long Short Term Memory (CNN-LSTM) for crime prediction. Primarily, this study proposed a BiLSTM based transfer learning architecture due to its high accuracy in predicting weekly and monthly crime trends. The transfer learning paradigm leverages the fine-tuned BiLSTM model to transfer crime knowledge from one neighbourhood to another. The proposed method is evaluated on Chicago, New York, and Lahore crime datasets. Experimental results demonstrate the superiority of transfer learning with BiLSTM, achieving low error values and reduced execution time. These prediction results can significantly enhance the efficiency of law enforcement agencies in controlling and preventing crime.

Matched MeSH terms: Crime
Study of the Behaviors of Gunshot Residues from Spent Cartridges by Headspace Solid-Phase Microextraction-Gas Chromatographic Techniques

Chang KH, Yew CH, Abdullah AF

J Forensic Sci, 2015 Jul;60(4):869-77.
PMID: 25771708 DOI: 10.1111/1556-4029.12745

Gunshot residues, produced after shooting activity, have acquired their importance in analysis due to the notoriety of firearms-related crimes. In this study, solid-phase microextraction was performed to extract the headspace composition of spent cartridges using 85-μm polyacrylate fiber at 66°C for 21 min. Organic compounds, that is, naphthalene, 2,6-dinitrotoluene, 2,4-dinitrotoluene, diphenylamine, and dibutyl phthalate were detected and analyzed by gas chromatography-flame ionization detection technique. Evaluation of chromatograms for diphenylamine, dibutyl phthalate, and naphthalene indicates the period after a gunshot was discharged, whether it was 1 days, 2-4 days, <5 days, 10 days, 20 days, or more than 30 days ago. This study revealed the potential effects of environmental factors such as occasional wind blow and direct sunlight on the estimation of time after spent cartridges were discharged. In conclusion, we proposed reliable alternative in analyzing the headspace composition of spent cartridges in a simulated crime scene.

Matched MeSH terms: Crime
Unmasking domestic violence: Examining victim and perpetrator characteristics and injury patterns in Kuching, Sarawak

Chew KS, Wong SSL, Siew KL, Kandasamy V

Med J Malaysia, 2024 Mar;79(2):128-132.
PMID: 38553915

INTRODUCTION: Domestic violence (DV) is a pervasive social and public health issue affecting millions globally, regardless of age, gender or socioeconomic background. Understanding victim and perpetrators' characteristics as well as the DV injury patterns are essential for developing targeted interventions and prevention strategies. Although past DV studies have often focused on female victims, it is increasingly recognised that DV affects a significant proportion of male victims as well. This study aimed to comprehensively examine both male and female DV victims and perpetrators, as well as the anatomical regions affected in DV cases in Kuching, Sarawak, so that a deeper understanding of DV within this community can be enhanced.
MATERIALS AND METHODS: This prospective, observational study was conducted from March 2021 to March 2023, involving adult DV victims aged 18 years and above admitted to the One Stop Crisis Center (OSCC) of Sarawak General Hospital. Data were collected from the OSCC clerking sheet, focusing on the victims, perpetrators and the violence characteristics.
RESULTS: A total of 133 DV victims were analysed, with 25.6% being male victims. Although majority of the perpetrators in cases involving male victims were male perpetrators, there was a significantly higher number of female perpetrators in these male DV cases (i.e., 5 out of 34 cases,14.7%) compared to in female DV cases (4 out of 99 cases, 4.0%) (p = 0.05). The commonest type of relationship between the victims and perpetrators was spouses or ex-spouses (56.4%). Male victims had more cases involving weapons (67.6%) compared to female victims (26.3%), p < 0.001. The most affected anatomical region was the head and neck (63.9%) region although no significant differences were observed.
CONCLUSION: The study reveals that DV affects individuals across all societal classes and income groups. Although weapons were used more frequently in male DV cases, other injury characteristics and affected anatomical regions were not significantly different between genders, suggesting female perpetrators can inflict similar injuries as male perpetrators. Subgroup analysis showed that the majority of male victims faced abuse from their children or grandchildren, hinting at hidden geriatric abuse, that should be unmasked and treated as a separate entity.

Matched MeSH terms: Crime Victims*
Molecular genetic approach in the forensic science of animal species identification

Chong, Lee Kim

Buletin Persatuan Genetik Malaysia, 2005;11(1):0-0.
MyJurnal

Animal species identification is one of the important fields in forensic science. Unlike human forensics which makes use of DNA fingerprinting techniques to identify individuals of the same species - humans, animal forensic species identification is much more complicated as it involves the ability to identify and distinguish between hundreds to thousands of species when the material evidence is only a trace of animal tissue without the presence of any visual physical morphology. It is even more difficult when the specimen is an unknown and no reference material is available. Animal species identification is not only important for the prevention of wildlife crimes for the purpose of wildlife protection and conservation but it is also becoming more and more significant in food safety issues especially for the meat industry. Owing to the demand and the necessity of providing such services for regulation and enforcement in the context of environmental protection, food safety and biosafety, the Department of Chemistry (DOC)
Malaysia has initiated the use of DNA techniques employing the most widely used genetic markers as part of its scientific solution for animal species identification.

Matched MeSH terms: Crime
Victimization experiences of adolescents in Malaysia

Choo WY, Dunne MP, Marret MJ, Fleming M, Wong YL

J Adolesc Health, 2011 Dec;49(6):627-34.
PMID: 22098774 DOI: 10.1016/j.jadohealth.2011.04.020

There has been little community-based research regarding multiple-type victimization experiences of young people in Asia, and none in Malaysia. This study aimed to estimate prevalence, explore gender differences, as well as describe typical perpetrators and family and social risk factors among Malaysian adolescents.

Matched MeSH terms: Crime Victims/classification*; Crime Victims/statistics & numerical data
Fulltext Perceptions of Stalking: Examining Perceivers' Country of Origin, Perpetrator-Target Prior Relationship, and the Mediating Effect of Victim Responsibility

Chung KL, Sheridan L

J Interpers Violence, 2022 Nov;37(21-22):NP19644-NP19663.
PMID: 34490815 DOI: 10.1177/08862605211042601

Research in stalking perceptions has shown certain relational biases, in which people tend to view ex-partner stalkers to be less dangerous than stranger or acquaintance stalkers. These findings are in direct contrast to those of real-life cases whereby ex-partner stalkers pose a greater threat. In addition, although stalking is recognized as a global social problem, most studies have been based on samples drawn from Western, educated, industrialized, rich, and democratic countries. The current study examined whether the prior relationship between the stalking perpetrator and target influences people's perceptions of stalking and whether cross-national differences exist between participants based in Malaysia (where there is currently no law that criminalizes stalking) and England (where stalking has been outlawed since 1997). In a 3 × 2 between-subjects design, 294 Malaysian participants and 170 English participants were presented with a vignette describing a stalking scenario in which the perpetrator was depicted as a stranger, acquaintance, or ex-partner. Participants judged the extent to which the perpetrator's behavior constitutes stalking; necessitates police intervention; would cause the victim alarm or personal distress; would cause the victim to fear the use of violence; and can be attributed to encouragement on the part of the victim. Results showed that typical relational biases existed in both samples, but Malaysian participants were less likely than their English counterparts to label any harassing scenario as serious. Perceptions of victim responsibility were found to mediate the effect of prior relationship and nationality on participants' perceptions. The findings point to the urgency of better cross-cultural understanding of harassment behavior as well as legislations against stalking.

Matched MeSH terms: Crime Victims*
Fulltext "I feel it is not enough…" Health providers' perspectives on services for victims of intimate partner violence in Malaysia

Colombini M, Mayhew S, Ali SH, Shuib R, Watts C

BMC Health Serv Res, 2013;13:65.
PMID: 23419141 DOI: 10.1186/1472-6963-13-65

This study explores the views and attitudes of health providers in Malaysia towards intimate partner violence (IPV) and abused women and considers whether and how their views affect the provision or quality of services. The impact of provider attitudes on the provision of services for women experiencing violence is particularly important to understand since there is a need to ensure that these women are not re-victimised by the health sector, but are treated sensitively.

Matched MeSH terms: Crime Victims*
Fulltext Response to Commentary by Adriaan van Es

Das AK

Indian J Med Ethics, 2020 5 13;V(2):151.
PMID: 32393445 DOI: 10.20529/IJME.2020.043

I would like to thank Dr Adriaan Van Es for his commentary (1) on my article (2). To start with, let me make one thing clear: I am not sure why he thinks that I am condoning the practice of penal amputation. As I clearly state in my conclusion, the arguments that may (or may not) justify penal amputation are abhorrent in liberal societies. We are on the same side here. But what of those who live in less secular societies where religious faith may be unquestioned? In my opinion, van Es has resorted to a typical example of a tortured form of ethical logic (3), which researchers from countries that have different value systems and different problems have deplored, albeit in a different context.

Matched MeSH terms: Crime*
Maternal smoking during pregnancy and self-reported delinquency by offspring

Ellis L, Widmayer A, Das S

Crim Behav Ment Health, 2012 Dec;22(5):325-35.
PMID: 22696101 DOI: 10.1002/cbm.1828

BACKGROUND: Several studies have reported significant positive correlations between smoking during pregnancy by mothers and the involvement of their offspring in criminal/delinquent behaviour later in life, but these findings have been described as modest and the criminality based on official conviction statistics.
AIMS: We sought to verify this relationship and probe for more details on the basis of self-reported offending among college students.
METHODS: Independently completed questionnaires were collected from 6332 students and their mothers. The students provided information about their delinquent acts, if any, according to eight categories. Their mothers provided retrospective reports of their smoking habits, if any, during pregnancy.
FINDINGS: Mothers who recalled having smoked during pregnancy were significantly more likely than non-smoking mothers to have offspring who self-reported engaging in some types of delinquency. This relationship was more evident for female offspring than for male offspring and was most pronounced for illegal drug use by the offspring. There was, however, no relationship between offspring offending and estimated number of cigarettes smoked by mothers, month of pregnancy when smoked or consistency of smoking throughout pregnancy.
CONCLUSION: Overall, our study confirms that maternal smoking during pregnancy is associated with offspring involvement in delinquency, but the lack of critical timing or dose-response relationships between maternal smoking and later offspring delinquency cast doubt on the possibility that the associations are due to teratogenic effects of tobacco smoke.
Study site: college students at 20 US and two Canadian universities

Matched MeSH terms: Crime/statistics & numerical data
Fulltext Expediting the sampling, decalcification, and forensic DNA analysis of large elephant ivory seizures to aid investigations and prosecutions

Ewart KM, Lightson AL, Sitam FT, Rovie-Ryan JJ, Mather N, McEwing R

Forensic Sci Int Genet, 2020 01;44:102187.
PMID: 31670244 DOI: 10.1016/j.fsigen.2019.102187

The illegal ivory trade continues to drive elephant poaching. Large ivory seizures in Africa and Asia are still commonplace. Wildlife forensics is recognised as a key enforcement tool to combat this trade. However, the time and resources required to effectively test large ivory seizures is often prohibitive. This limits or delays testing, which may impede investigations and/or prosecutions. Typically, DNA analysis of an ivory seizure involves pairing and sorting the tusks, sampling the tusks, powdering the sample, decalcification, then DNA extraction. Here, we optimize the most time-consuming components of this process: sampling and decalcification. Firstly, using simulations, we demonstrate that tusks do not need to be paired to ensure an adequate number of unique elephants are sampled in a large seizure. Secondly, we determined that directly powdering the ivory using a Dremel drill with a high-speed cutter bit, instead of cutting the ivory with a circular saw and subsequently powdering the sample in liquid nitrogen with a freezer mill, produces comparable results. Finally, we optimized a rapid 2 -h decalcification protocol that produces comparable results to a standard 3-day protocol. We tested/optimised the protocols on 33 raw and worked ivory samples, and demonstrated their utility on a case study, successfully identifying 94% of samples taken from 123 tusks. Using these new rapid protocols, the entire sampling and DNA extraction process takes less than one day and requires less-expensive equipment. We expect that the implementation of these rapid protocols will promote more consistent and timely testing of ivory seizures suitable for enforcement action.

Matched MeSH terms: Crime/legislation & jurisprudence

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