Footage shows the victims of a suspected poisoning at a five start hotel in Thailand being moved to hospital for tests in the early hours of Wednesday morning.

The four Vietnamese and two American nationals were found dead inside a luxury room at the Grand Hyatt Erawan in Bangkok shortly before 5:30pm local time on Tuesday July 16.

Five of the dead were named by police as females Sherine Chong, Thi Nguyen Phuong and Thi Nguyen Phuong Lan. Two dead men were Dinh Tran Phu and Hung Dang Van. The sixth has not been named.

Five bodies are believed to have been inside the room and one outside the door. Police are searching for a seventh member of the group, who they suspect was involved.

Police Lieutenant General Thiti Saengsang, commander of the Metropolitan Police Bureau, along with Major General Noppasin Poolsawat, deputy commander of the Metropolitan Police Bureau, were dispatched to the suspected crime scene.

Police Lieutenant General Thiti Saengsang said: 'Hotel staff found the dead inside the room. They called the police immediately and forensic officers arrived.

'This was not self harm, but someone caused the deaths. We are tracing every step since they got off the plane.

Thai prime minister Srettha Thavisin and other government ministers were scrambled to the hotel late on Tuesday to desperately try and protect the country's lucrative tourism industry. They assured people that it was an isolated case and ordered a swift investigation.