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Mel Gibson allegedly made up to 30 "terrorizing" phone calls to ex Oksana Grigorieva the night they called it quits, she has told law enforcement investigators, according to RadarOnline.

Those include eight profanity-ridden messages he left on her answering machine, the site reports.

In one tirade that lasted just over two minutes, the actor, 54, drops the F-bomb 23 times, Radar reports.

Another bizarre messages lasts 13 seconds and "the words coming out of his mouth barely sounded like words," according to Radar.

Radar reports that Gibson taunts the Russian singer, 40, in one message: "Just making sure you’re awake, if you were trying to sleep. Because I am awake — and you deserve to be."

"Don’t ever sleep again,” he later repeats. "Don't sleep as long as I don't sleep."

Gisbon is currently at the center of a bitter custody battle with Grigorieva, with whom he has a daughter, Lucia, nearly nine months.

Authorities are currently investigating who has leaked the damaging recordings which paint Gibson as a racist, violent man.

Gibson has met with detectives to discuss his claims that Grigorieva attempted to extort money from him.

Detectives are also looking into Grigorieva's claims that Gibson abused her during a January fight.

Neither has been arrested and no charges have been filed.