Sriracha, 8 May 2011 [PDN]: At 9.30 p.m., Police Lieutenant Colonel Sumet Harnwisai of Lamchabang Police Department was informed that a young man had committed suicide at his house in Tungsukhala, Sriracha. The police and Sawangprathep Sriracha Rescue Team rushed to the scene.
Tirawut Petchking was found dead with a plastic bag over his head along with a roll of leftover adhesive tape, a police officer described, suspecting that the victim had used the tape to suffocate himself to death.
The police added there was no sign of struggle at the scene.

According to his friend, Yok Namsang, the 23-year-old victim was a block factory worker, who lived in Nakornratchasrima province.
Yok told the police that Tirawut looked cheerful earlier today when he came by the victim’s house to have a drink while watching football.
It appeared that Tirawut had committed suicide due to stress, the police speculated.
However, his body will be examined by the Institute of Forensic Medicine to determine the actual cause of death
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Why am I asking questions, the police didn't. They speculate suicide, case closed.
Forensic Examine: cause of death asphyxiation.
Yep, police is correct - suicide.
His friend says he was cheerful. What information is the police basing there speculation of suicide due to stress?