A 43-year-old Naperville man was found dead in his car Tuesday night after Bolingbrook police responded to Jewel-Osco in an attempt to find a person who was thought to be suicidal.
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The incident took place at 8:35 p.m. at 1200 W. Boughton Rd., near Boughton Road and Weber Road.
The preliminary investigation of the death appeared to be a suicide, according to police. The man was pronounced dead at 10:55 p.m.
Officers cleared the area when they found a suspicious object near the body. The Bolingbrook Fire Department evaluated and handled the hazardous material concern. The object was later identified as a helium tank.
The incident remains under investigation.