Police investigators have revealed that the apprehension of Mr. Yuenyaw, responsible for the brutal murder of Mrs. Viphaporn Jaila [23] and her daughter Tharin Jitsanguansuk [2], was thanks to DNA tests performed on workers at the Allied Precision Company, where the husband of the deceased, Mr. Jitsanguan, works.
http://www.pattayadailynews.com/en/2010/02/17/pattaya%E2%80%99s-brutal-double-murderer-given-death-sentence/