Authorities want to know what Violet Kowal knows.
The Polish-born model, who claims to have had an affair with Mel Gibson that ended in January, was contacted about two weeks ago by Los Angeles County law-enforcement officials in connection with an ongoing investigation concerning Gibson, a source exclusively tells E! News.
"She hasn't done a formal interview yet, but they have contacted her," the source says.
The L.A. County Sheriff's Department has confirmed that it is investigating both Oksana Grigorieva's domestic violence allegation against Gibson and his claim that she tried to extort roughly $10 million from him in exchange for not releasing the recordings she made of him ranting over the phone.
No arrests have been made or charges filed in either matter, though a source close to Gibson recently told E! News that reports of him threatening to his baby Lucia "are absolutely false."
The domestic violence probe is expected to be completed and turned over to the District Attorney's Office within the next two weeks, Sheriff's spokesman Steve Whitmore said Monday.
E!'s source did not say which investigation might involve Kowal, whose rep did not return a request for comment.
In a recent interview with E! News, she says that, during the course of their approximately 6-month relationship, Gibson never talked about Grigorieva, nor did she meet her.
Gibson, meanwhile, denied having an affair with the adult-website operator when the National Enquirer linked the two together in May. But don't expect too many official comments from him this week: he's currently in Costa Rica on a fishing trip with his sons.
—Additional reporting by Claudia Rosenbaum
Be sure to tune in Thursday at 10 p.m. for the premiere of the E! News special Mel Gibson: Sex, Lies and Audiotape
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What are the odds that Mel Gibson shows up in our Men's Fashion Police gallery anytime soon? In a red carpet ensemble, that is.