[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/CRIME/05/07/peterson.murder.arrest/art.peterson.file.gi.jpg caption="Drew Peterson was arrested Thursday on murder charges relating to his third wife, Kathleen Savio."]
Tonight on AC360°, we're covering breaking news on the arrest of Drew Peterson. Remember him? He's the former police sergeant in Illinois who authorities call the prime suspect in the disappearance of his fourth wife, Stacy Peterson. But just hours ago a grand jury indicted him for the murder of his third wife, Kathleen Savio.
Savio's death had been ruled an accidental drowning after her body had been found in an empty bath tub in March 2004, just days away from divorce. But her family insisted the death was linked to foul play. Authorities exhumed the body, tests were performed, and her death was then ruled a "homicide staged to look like an accident."
The same grand jury that has indicted Peterson on the death of his third wife is looking at whether he should also be charged in Stacy Peterson's disappearance. She vanished October 2007. Peterson has said repeatedly that she left him for another man.
Peterson is now engaged to a woman that would become his fifth wife. But that wedding may be put on hold, since he faces this new legal battle.
Join us for more on this breaking story and tonight's other headlines starting at 10pm ET.
See you then!
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