The six persons, who were of Vietnamese , heritage, were found in a place at the , pleasure Grand Hyatt Erawan on Tuesday. Two of them had US visas.
Over the weekend, the team checked into various areas. No evidence of conflict were found in any of their bodies in any one place on the second floor.
On a table were leftover sheets of leftover food that had been ordered from the dining company. Some of them were also encased in plastic wrap.
Later on Tuesday, Thai authorities said they had” suspicious substances” discovered on the bottom of many glasses in the room, raising the possibility of a case of poisoning.  ,
Regulators were looking for a sixth guest, a Taiwanese nationwide.