Oksana Grigorieva, Mel Gibson Oksana Grigorieva, Mel Gibson

An apparent recording of Mel Gibson berating his ex-girlfriend and the mother of his child surfaced on RadarOnline.com Friday, soon after he claimed she tried to extort him over the recording.

Shortly after the profanity-filled recording hit the web, Gibson was dropped by his agency of more than 30 years, William Morris Endeavor, according to The Hollywood Reporter.

Mel Gibson under investigation for possible domestic violence

The recording features a man who sounds like the 54-year-old Oscar winner criticizing his ex-girlfriend, Oksana Grigorieva, for her choice of dress, among other things, and telling her, "if you get raped by a pack of n------, it will be your fault."

The abusive and racist language on the tape recalled Gibson's DUI arrest in 2006, when police said he made anti-Semitic remarks including telling the arresting officer "Jews are responsible for all the wars in the world."

Gibson's split with WME also coincides with the July 3rd death of his longtime agent, Ed Limato. After Limato's death, WME co-chief executive Ari Emanuel (famous as the inspiration for Entourage power agent Ari Gold) had leeway to part ways with Gibson, according to THR.

Gibson, who is currently under investigation for alleged domestic violence against Grigorieva, says she threatened to leak the recordings to the news media if he didn't pay her. Gibson also claims she also made false claims to the authorities about his alleged abuse.

The ongoing public battle between the two has grown only more heated since a restraining order was filed on June 25 by Grigorieva, 40, which alleged that Gibson punched her in the face multiple times on Jan. 6, breaking a tooth and causing a concussion. An investigation was launched Monday when the incident was brought to the attention of the Los Angeles County Sheriff's Department.

"There have been allegations brought forth by his former girlfriend," sheriff's department spokesman Steve Whitmore told TVGuide.com Thursday. "We interviewed the alleged victim on Monday, which officially launched our investigation."

The couple is embroiled in a bitter custody suit for their eight-month-old daughter, Lucia.