Oksana Grigorieva Claims Mystery Witness Saw Mel Gibson Beatdown

Oksana Grigorieva Claims Mystery Witness Saw Mel Gibson Beatdown

Oksana Grigorieva, Mel Gibson's estranged baby mama, told Sheriff's deputies there was another person present the night the actor allegedly assaulted her.

She says a man named Tony, a security guard and driver for Mel, was there for the alleged assault, a potentially key witness in their domestic violence case.

One small problem, according to TMZ ... no one named Tony worked for Mel at the time. Once again, Oksana probably couldn't appear shadier if she tried.

Still, she tells investigators she's positive Tony was at Mel's Malibu home and believes he saw the altercation ... or at least part of it. This is all very unclear.

Any witness to the alleged incident would be huge if domestic violence charges are filed against Mel Gibson, but that seems unlikely to us, Tony or no Tony.

Despite her claims that Mel could kill us all, Gibson has not been charged with a crime. He needs serious help, but the O.G. has a serious credibility problem.

Sure, it's possible Mel paid Tony a million bucks to change his name and disappear. It's also possible Oksana is lying or exaggerating the incident with him. (thehollywoodgossip)