Pol Captain Thirasak Chaimanee, deputy inspector of Phra Pradaeng police station, said the man was identified as Wirapoj Santiwimarnmake, 42.
He was found floating face-dong at a pier in front of factory on Soi Suksawad 45 in Tambon Bang Khuru. There were signs of physical injury on his face and body. Cash amounting to Bt830, a mobile phone, an ATM card, an ID card and a driving licence were found on him.
Warin Thammada, 38, a worker at the factory, told police that a Myanmar man, who appeared shocked, ran to her to tell her that he spotted a body at the pier. The Myanmar man he was collecting krathong floats at the pier to look for coins inside when he reached for a krathong, he spotted the body.
The body was sent for an autopsy at the Police Hospital.