Police Investigating Mel Gibson For Domestic Violence After Oksana Filed Complaint

After RadarOnline.com revealed Mel Gibson told his ex-girlfriend Oksana Grigorieva she "f--cking deserved" to get hit, the Los Angeles County Sheriff's Department has launched a domestic violence investigation after Oksana filed a complaint.

The investigation started on Monday when the victim made a complaint, L.A. County Sheriff spokesperson Steve Whitmore told RadarOnline.com. In the new tape recording, a teary Grigorieva can be heard asking the 54-year-old actor what he thinks he is doing hitting her while she is holding their eight-month-old child Lucia.

The allegations stem from a January incident at the actor’s Malibu mansion.

"What kind of man is that who would hit a woman while she is holding a child in her hands, hitting her twice in the face?” questions the Russian musician.

The Braveheart star answers: "You know what -- you f***ing deserved it."

Now the Sheriff's Dept. has confirmed its investigators are "currently gathering information regarding the allegations."

In a statement to RadarOnline.com, Lt. Richard Erikson said: "An investigation of domestic violence was launched by Malibu/Lost Hills Station Detectives in July, 2010, involving actor Mel Gibson and his former girlfriend, Oksana Grigoieva. The Detective in charge of the investigation is currently gathering information regarding the allegations. Due to the investigation being preliminary in nature, no other information is available at this time."

In other excerpts from the racist and threatening tirade against Grigorieva, as revealed exclusively by RadarOnline.com, Gibson said he would burn down his ex-lover’s house.

“You're an embarrassment to me,” the Oscar-winning director and actor allegedly said.

EXCLUSIVE PHOTOS: See The First Photos of Mel and Oksana In a Passionate Embrace On The Beach

“You look like a f***ing pig in heat, and if you get raped by a pack of n******, it will be your fault.”