6 dead in Bangkok hotel, including 2 Americans; cyanide found in blood – KIRO 7 News Seattle

They were last seen alive when food was brought to the room on Monday, including tea in thermoses and cups.

A woman accepted the food from the person who brought it to her. The man had offered to make her tea when he brought it to her. The woman declined and wanted to make it herself, the New York Times reported.

The surveillance video showed no one leaving the room, which was locked from the inside.

The bodies were discovered by a maid who opened the room when the guests did not check out.

The food delivered was untouched, some of it still wrapped. The staff found several used teacups and two thermos flasks on a table, which had also been delivered with the food.

Police said traces of cyanide were found in both the thermos flasks and the cups.

Although cyanide was found in the bodies of all six – three men and three women – there were no signs of blunt force trauma, the AP reported.

The dead were identified as Sherine Chong and Dang Hung Van, who were Vietnamese Americans, and Nguyen Thi Phuong Lan, Hong Pham Thanh, Tran Dinh Phu and Nguyen Thi Phuong from Vietnam, the Times reported.

Lan was a realtor who worked with Chong. Chong had received $280,000 from Phuong and her husband, Thanh, the Times reported. Phuong and Thanh wanted an update from Chong and Lan. They had planned to meet in Japan, but due to visa issues, the meeting was moved to Bangkok.

Police said the deal was a possible motive for the poisoning and assumed that one of the six men poisoned the others.

Four bodies were found in the living room of the hotel room, two in the bedroom and one near the door. The two men had apparently tried to leave the hotel but were unable to do so.

A seventh person was listed in the booking, but police believe that person was not involved.

The U.S. Embassy and the Vietnamese Embassy have been informed of the case and the FBI will participate in the investigation, AP and BBC reported.