Traces of cyanide are found in the blood of Vietnamese and Americans found dead in a Bangkok hotel ABC NewsCyanide poisoning likely killed six found dead in luxury hotel, including two US citizens, Thai police say CNNCyanide Blamed for Mysterious Deaths in Luxury Thai Hotel The Wall Street Journal6 hotel guests found dead believed to have been poisoned, Bangkok officials say CBS NewsIn a Bangkok Hotel Room, Six Bodies and Traces of Cyanide The New York Times