A company executive fell from the Rama IX bridge and drowned on Monday, leaving behind a suicide note addressed to his three children, police said.
Police said the man drove a white Nissan sedan to the middle of the Rama IX bridge, stopped and got out of the vehicle, and then jumped into the Chao Phraya River.
The police found in the car a business card for Sompong Wanasinchai, director for general administration of a private company in Samut Prakan's Bang Phli district.
Also found in the car was a letter to his three children saying that he was suffering from work-related problems and depression. This, coupled with the fact a senior relative was sick with cancer, caused him to suffer from insomnia and drove him to despair, he said in the letter.
At the request of Bang Kho Laem police, divers from the Ruam Katanyu Foundation scoured the river and found a body, believed to be of Sompong, in about one hour.
Police were in the process of verifying his identity.