Mel Gibson accused of using handgun to threaten ex

New York, July 10 (ANI): Mel Gibson has now been accused of using a handgun to threaten ex-girlfriend Oksana Grigorieva during one of their heated clashes.

According to TMZ, this explosive allegation is part of the Los Angeles Sheriff's probe into whether the hot-headed actor abused his Russian baby mama and endangered their infant daughter.

Grigorieva told investigators the "Lethal Weapon" star made the threat at his Malibu, Calif., home, reports the New York Daily News.

The L.A. Sheriff's Department has announced that it had opened an investigation into domestic abuse accusations against Gibson. (ANI)