The blaze killed Decha Duangchana, a 35-year-old firefighter volunteer for the Bangkok Fire and Rescue Department based in Lak Si district, as he and other fighters tried to contain the fire. He was believed to have died of suffocation due to lack of oxygen.
Police from the Metropolitan Police Bureau, Forensic Science Office, Crime Suppression Division and Phahon Yothin station, forensic experts, Chatuchak district officials, Bangkok Fire and Rescue Department, and authorities of the Public Works and Town and Planning Department of the Interior Ministry inspected the fire scene on Sunday to try to establish the cause of the blaze.
They collected evidence, checked the footage of closed circuit cameras and interrogated more than 30 witnesses, including firefighters and security guards.