Struggling pop star Britney Spears ran over a photographer's foot in her car hours after losing visitation rights to her children, it was reported today.

Spears was driving out of a Beverly Hills medical building car park yesterday afternoon when the incident happened, according to celebrity website Hollywood.TV.

Police in Beverly Hills said complaint had been filed.

Video on the website shows elements of the incident, though not the tyre actually rolling over the cameraman's foot.

It shows Spears beginning to pull out of the car park when her car is surrounded by more than a dozen celebrity photographers. The car comes to a stop.

Spears honks and the car lurches forward a few feet - when the photographer is apparently hit.

Shouting is heard, and the camera jerks around as fellow photographers apparently help a man up.

Spears drives off. Seconds later, video shows what appears to be a tyre mark on the unidentified paparazzo's sock. The man, wearing sandals with white socks, does not respond to questions from the cameraman but instead walks off without any apparent problems.

Earlier yesterday, Spears learned she cannot even visit her young sons, who are in the custody of ex-husband Kevin Federline, until she complies with a court order.

Spears' apparent accident is not the first time she has had trouble behind the wheel. She already faces charges over an alleged hit-and-run incident and for driving without a valid licence.

In that incident, paparazzi filmed Spears steering her car into another vehicle as she tried to turn into a spot in a Studio City car