The photographer has accused Bieber of beating him up when he tried to take his picture. The incident took place at the a shopping center. The 18-year-old was in a mall called the Commons where the brawl took place, a website reported.
The photographer later called 911 and complained of pain in upper torso. He was admitted to a hospital, but was discharged after a short while.
However, by the time authorities came Bieber had left. The photographer has filed a police report naming Bieber as the culprit.
Los Angeles county sheriff's detectives were investigating claims by the photographer that Bieber struck him after he snapped photographs of the singer and his girlfriend, actress Selena Gomez.