Jerrell Thomas, 37, of North Lawndale is charged with first-degree murder, attempted murder of a peace officer, possession of a stolen firearm and possession of a firearm by a felon, according to Oak Park officials.

An Oak Park police detective was killed Friday morning by a gunman who was seen leaving a bank, marking the first killing of an officer in the line of duty in the near west suburb in 86 years, officials said.