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Mel Gibson, Oksana Grigorieva

Kevin Winter/ Getty Images

Mel Gibson might have played a lethal weapon in the movies. Now the cops want to make sure he isn't doing the same offscreen.

The Los Angeles Sheriff's Department has opened a domestic violence investigation into accusations the Passion of the Christ auteur punched out his ex-girlfriend/baby mama Oksana Grigorieva earlier this year during an ugly confrontation.

"We have spoken to the alleged victim," spokesman Lt. Steve Whitmore tells E! News. "The investigation officially began Monday and we are in the preliminary stages."

What would Jesus say?

No other details were revealed, including what sort of evidence—audio or otherwise—the police are working with. Whitman also would not say whether Gibson had been questioned yet.

Word of domestic abuse first surfaced last week after RadarOnline reported that it had obtained recordings of an allegedly violent Jan. 6 confrontation between the 54-year-old Gibson and 40-year-old musician Grigorieva, as she held the ex-couple's 9-month-old daughter, Lucia.

The former lovebirds, who called it quits in April, are currently locked in nasty court battle over custody and financial arrangements and both reportedly have restraining orders against each another.

Gibson's camp is planning to make a statement on the matter later this afternoon.

—Reporting by Whitney English

(Originally published July 8, 2010, at 12:11 p.m. PT)

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Will Tinseltown forgive Gibson for his latest alleged infractions? Find out here.