OAK BROOK, Ill. (CBS) — The Oak Brook Police Board will decide Thursday night whether to fire Drew Peterson’s son from the force.

Stephen Peterson has been paid administrative leave from the Oak Brook police department since August.

Police chief Thomas Sheahan has been trying to have him fired after he allegedly violated department rules by holding onto his father’s guns, so law enforcement would not find them during the Stacy Peterson investigation in 2007.

Stacy Peterson, Drew Peterson’s fourth wife, disappeared on Oct. 29, 2007. She has never been found.

Drew Peterson has been charged separately with the murder of his third wife, Kathleen Savio, whose body was found in a dry bathtub on March 1, 2004. He is being held in the Will County Jail awaiting trial.

Drew Peterson’s attorney says the case against Stephen is baseless.

Documents submitted to the Board of Fire and Police commissioners show Stephen Peterson has had a history of disciplinary issues as a police officer, including allegedly running police data checks on village employee vehicles.

Watch & Listen LIVE