CHICAGO -- Chicago police announced Wednesday that a Naperville man has been arrested in connection with the 1981 killing of a delivery driver at his North Side pizzeria.

Chicago police detectives said they cracked the case after speaking with witnesses who provided both critical details of the crime and helped identify the offender, according to a release Wednesday night from police News Affairs.

Michael Cosmano, 56, of west suburban Naperville, was arrested Tuesday on an active warrant for murder with intent to kill, according to the release. He was arrested without incident at a Naperville residence, the release said.

On June 12, 1981, Chicago police discovered a 29-year-old man fatally shot in the alley behind the pizzeria where he worked as a delivery driver in the 1900 block of West Chicago Avenue, the release said. Police Wednesday night would not disclose the name of the victim.

Chicago Police Cold Case and Harrison Area Detectives worked on the case, which led to charges against Cosmano, who was the pizzeria owner and the victim's boss.

A verbal dispute regarding wages and employment conditions escalated and ended with the victim fatally shot in the chest, police said.

Cosmano was due to appear in court for a hearing Thursday, but details of the appearance were not immediately available Wednesday night.

Copyright 2008, Sun-Times News Group