การสืบสวนทางนิติวิทยาศาสตร์ในเหตุระเบิด 4 จังหวัดชายแดนภาคใต้

Abstract

Terrorist activities are frequent in 4 provinces: Pattani Narathiwat Yala and Songkhla. The terrorists apparently  aimed to kill police officers and Buddhists in various manners but mostly by using explosive devices. From  the record kept by the Command Center of the Royal Thai Police (Forward Post) terrorist activities using explosives  increased constantly (2004-2006). The types of bomb are not specific and are called “Improvised Explosive Device (IED)”. The evidence collected from post blast scenes are hard to identified. Attempts to identify the person  or group of terrorists who committed the crimes by DNA collection failed because these are hard to detect or collected from the debris and burned evidence. The local police could not find any connection to the local people  because of lack of information. In this study the obtained data include 727 cases of explosion incidentscollected by the Command Center of the Royal Thai Police (Forward Post) between January 2004 and December 2006 in Songkhla Pattani Yala and Narathiwat. A total of 14 variables were used in the classification of evidence to analyze the data through bomber signature to find association between terrorist groups in each province.  The results gave a partial signature of bombers but most of the association between the bomber signature  in each province  could not be identified because most of the evidence from post blast scenes could not be  completely collected  for analysis for fear of secondary bombs and subsequent terrorist attack. Thus there was a  limitation on the safety of the investigator.