A Cambodian and a Vietnamese were found dead at the Thai immigration detention centre, a media report from that country said on Wednesday.
The Nation reported a detainee sharing the same cell with 15 others woke up at night and found that the Cambodian, aged 55 and Vietnamese, 72, was not breathing although they were in a sleeping position.
The newspaper reported that two men were charged with illegally entering the country.
Their bodies were sent to King Chulalongkorn Memorial Hospital for autopsy.