Police are investigating the circumstances that led to the event
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News from Saitama
Three are believed to have inhaled carbon monoxide fumes
No personal items that could assist in his identification were found at the scene
Person is believed to be in their 40s to 70s
Case is being treated as a suicide or the result of an accident or foul play
Boy suffered a broken arm and a bruised right lung that required six months to heal
Road bike was found near the body, police said
Due to the stage of decay, the gender of the person is not known
No suicide note was found
Perpetrator fled the scene with 30,000 yen in cash, police said