Police are preparing to wrap up their investigation into suspected serial killer Sararat “Aem Cyanide” Rangsiwuthaporn and submit their report to prosecutors next week.
Investigators had found evidence to implicate Ms Sararat in the cyanide poisonings, deputy national police chief Pol Gen Surachate Hakparn said on Friday. They had examined purchase records for more than 700 bottles of cyanide and found that “Aem Cyanide” had purchased one bottle.
