By Kate Ward
Updated July 21, 2010 at 09:09 PM EDT

People reports that police officials are investigating Mel Gibson’s claims that ex-girlfriend Oksana Grigorieva attempted to extort the actor. The allegations are connected to the purported recordings of Gibson yelling at his ex-girlfriend; the actor claims Grigorieva demanded payment, or else she would leak the tapes. “Extortion allegations were brought to our attention [and] we’re looking into it,” Steve Whitmore, the L.A. Sheriff’s spokesman, told People.

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