Representatives for Drew Peterson contacted producers for FOX's lie-detector TV show "Moment of Truth" to suggest that he take a test on the air, FOX News confirmed on Tuesday.

TMZ.com first reported that lawyers for Peterson, a suspect in the disappearance of his fourth wife, Stacy, asked the program's producers to administer a lie-detector test to their client on national TV.

Stacy Peterson disappeared in October and is believed to be dead. Peterson is a prime suspect. He insists he is innocent and that she ran off with another man.

His third wife, Kathleen Savio, also died under mysterious circumstances in 2004, when she was found in a bathtub. Her body was exhumed for further forensic analysis, and officials have reclassified her death as a "homicide staged to look like an accident."

Drew Peterson repeatedly has refused requests from Stacy's family that he take a polygraph test but apparently has had a change of heart.