Mel Gibson Could Be Dragged To Court Over Threat To Kill Ex: Source (EXCLUSIVE)

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The Los Angeles judge who negotiated peace between Mel Gibson and ex-girlfriend Oksana Grigorieva could drag the Oscar-winning actor/director back to court to revise custody of their two-year-old daughter, Lucia, in the wake of his latest alleged death threats.

Whilst judge Peter D. Lichtman declared an end to the pair’s custody battle on August 31, last year, with a statement that he had provided “complete closure of this matter,” the Superior Court court still has “ongoing supervision of the case to see that its ruling is followed precisely,” a source told Celebuzz.

The insider told Celebuzz: “If, as it appears in this case, there has been some kind of breach of the courts rulings, it’s possible for further judicial review.”

“This is even more complicated because GIbson is on three years probation for criminal charges,” the source, who spoke to Celebuzz on the condition of anonymity, said.

“Any violation of his probation could earn him another day in court.”

According to Hollywood screenwriter Joe Eszterhas, Gibson told him that he wanted to stab Russian-born Grigorieva while having sex with her. Eszterhas claimed in a letter leaked online that Gibson, 56, explicitly said, “‘I’m going to kill her! I’m going to have her killed!'”

While Gibson has not specifically addressed the Grigorieva allegations, he’s labelled Eszterhas’s observations as “utter fabrications.”

Here are a few excerpts of Eszterhas letter to Gibson, first obtained by — and we warn some language may be offensive:

“You were raving at Oksana even after you’d reached a custody agreement over Luci… And then you were even more explicit about your threat: ‘I’m going to kill her! I’m going to have her killed!’ You said you’d become friends with two FBI agents (or former FBI agents) and they were going to help you kill her.”

“You kept raging about your ex-girlfriend, Oksana Grigorieva, Luci’s mother, whom you always referred to as ‘that c***’ and ‘that f***ing b****.’ You acted out for me the scene where you hit her. But you said you’d ‘just slapped her a little bit.’ After you slapped her, you said, she grabbed Luci and went running ‘hysterically’ down the hillside behind your house in the pitch dark.”

“’I want that c*** gone!’ you screamed. ‘Gone! Gone! Gone! I will not share Luci with her!’ And: ‘I’m going to get rid of her. No one will ever know! I’m not going to live this way the rest of my life! She’s poisoning Luci against me! She is evil! They worship the devil where she came from. She’s going to disappear! Gone!’”

Under Gibson and Grigorieva’s fragile agreement, the pair has been sharing custody of Lucia on an equal basis. Grigorieva also received $750,000 to be spread over three payments.

In March 2011, the Lethal Weapon star pleaded no contest to a misdemeanor charge of beating Grigorieva and was sentenced to 36 months probation, as well as domestic violence and mental health counseling.