Full Autopsy Expected Within 24 Hours, as Cyanide Residue Found on Drinking Cups Thai police are investigating the deaths of six foreigners, believed to have been caused by cyanide poisoning, whose bodies were discovered in a luxury Bangkok hotel. Authorities reported on Wednesday that traces of the lethal substance were uncovered inside the room at the Grand Hyatt Erawan Hotel, where the victims were located a day earlier. Thaksin Released on Bail During Politically Sensitive Trials Businesses