Former friend of Peterson pleads guilty to battery

A man who says who wore a wire to help the Illinois State Police investigate the disappearance of Drew Peterson's wife has pleaded guilty to battery for shoving the former Bolingbrook police sergeant.

Len Wawczak entered his guilty plea to the misdemeanor charge Wednesday in Bolingbrook Local Court.

The charge stems from a confrontation the two men had in a barbershop in July, after news reports that Wawczak and his wife wore a wire to secretly record conversations with Peterson. Wawczak admitted at the time he pushed Peterson, who signed a complaint against him.

Peterson has repeatedly denied involvement in his wife Stacy Peterson's disappearance last October or the 2004 death of his third wife Kathleen Savio, whose body was found in her bathtub.