*Jaleel White, best known for his role as Steve Urkel on “Family Matters,” is being investigated by California police for allegedly assaulting his baby mama.

Sources tell TMZ that the alleged victim accuses White of punching her in one of her breast implants two weeks ago while they were driving on Pacific Coast Highway with an infant in the car.

“We’re told, she claims when they got home White allegedly slapped her, and pushed her into a toilet so hard it broke the tank,” the Web site reported. “Sources connected with White’s baby mama, Bridget Hardy, tell TMZ Hardy is in fact the alleged victim. We’re told she did not report any injuries.”

The alleged victim filed a report with the LAPD on Tuesday. The investigation is ongoing.

Meanwhile, a rep for White tells TMZ, “There was absolutely no battery … no abuse … and the incident never happened. …This is just a ploy in an ongoing custody battle over their young daughter to tarnish his name.”