The three defendants were Bunpan Suthiwiriyawan, former chief of personnel and public relations department of Kaset Thai Sugar in Nakhon Sawan; Somchok Suthiwiriyapan, Bunpan’s brother and former staff of Thai Identity Sugar in Uttaradit; and another man identified as Sompong Buasakul. The three men had been charged with conspiring to commit murder, although they denied the charges.
In the original lawsuit, prosecutors accused mill owner and Kaset Thai Sugar manager Pradit Siriviriyakul of hiring Bunpan, Somchok and Sompong to murder Wansley by firing at him while he was travelling to the sugar mill in Nakhon Sawan province in a van. It was alleged that Wansley – who was auditing the mill on behalf of South Sathorn Planner Co Ltd – had uncovered fraud at the mill, which was under debt rehabilitation, and had refused to keep silent about it.