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Drew Peterson, the former police sergeant who authorities call the prime suspect in the disappearance of his fourth wife, Stacy Peterson, has been indicted on murder charges related to his third wife, Kathleen Savio, the Illinois state attorney's office said.

Illinois State Police said Peterson was taken into custody about 5:30 p.m. Thursday after a traffic stop near his home.

Police had staked out his home all day, said police Capt. Carl Dobrich, but waited for Peterson to leave to arrest him out of concern for his three children, who were inside the house.

Peterson, through his attorney, denied any wrongdoing in either case.

Wills County State's Attorney James Glasgow said he believes the case is strong and said Peterson is being held on $20 million bond. Read full article »

CNN's Susan Roesgen contributed to this report.

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