Peterson's son faces disciplinary action

Oak Brook police officials say one of Drew Peterson's sons faces disciplinary action for showing up at a grand jury appearance driving his police car and wearing his uniform.

Stephen Peterson is a police officer in Oak Brook.

A Will County grand jury is investigating the death of his father's third wife and the disappearance of his current wife.

Oak Brook Police Chief Thomas Sheahan told a local newspaper that Stephen Peterson is to appear before a disciplinary committee on Wednesday for "using the department vehicle when he went to court in Will County."

Stephen Peterson drove a squad car and wore his uniform when he appeared before the grand jury in December.

Drew Peterson denies any wrongdoing and has not been charged in either case.