Mark Koves, 28, of Crown Point, Ind., died at St. James Hospital in Chicago Heights, according to the Cook County Medical Examiner's office.
Thornton police officers responded to a 4:30 p.m. call Sunday of a naked man in the street near the Hubbard Park pavilion and Wolcott School, according to a statement from police.
When officers approached, the naked man "became very erratic and combative" and officers were forced to "subdue" him, the statement said. He was taken to a hospital, according to Thornton police, who did not say how the man was subdued.
The medical examiner's office said the man died as a result of police shocking him with a stun gun, CBS Chicago reported. An autopsy was scheduled.