Police want to question Justin Bieber after a photographer accused the singer of attacking him.
Bieber, and his girlfriend Selena Gomez, were involved in the alleged scuffle with the photographer on Sunday after leaving a theatre in California.
Bieber lost his shoe and hat during the encounter and had to be calmed by Gomez before leaving in his car.
Sheriff's Lt. Robert Wiard said he wants to speak to Bieber and Gomez, who left before police arrived at the scene, about the incident.
The photographer was taken to hospital with chest pains but was later released.
Bieber's publicist has not commented on the incident.