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LAPD Looking Into Mel Gibson's Ex-Girlfriend

Oksana Grigorieva and Mel Gibson
AP Photo
Oksana Grigorieva and Mel Gibson (AP Photo)

NEW YORK (CBS) Mel Gibson isn't the only one facing possible criminal charges.

Los Angeles authorities are checking into extortion allegations against Gibson's ex-girlfriend, Russian singer Oksana Grigorieva.

Sheriff's spokesman Steve Whitmore says the agency is looking into whether Grigorieva may have tried to extort the Academy Award-winner. He declined to offer any other details on the inquiry.

Detectives earlier this month interviewed Grigorieva after she claimed Gibson abused her during an incident in January.

A spokesman for Grigorieva declined comment Wednesday.

Gibson and Grigorieva are locked in a bitter custody dispute over their infant daughter.

No arrests have been made, and neither has been charged with any crimes.