The 19-year-old teen heartthrob took in a comedy show at The Laugh Factory with his rapper pal, Lil Twist, when, upon exiting the club around 11:45 p.m., the two were swarmed by paparazzi snapping pics.
After security brought up his white Ferrari, Bieber allegedly got behind the wheel. At that point, according to eyewitnesses, he and Lil Twist tried to drive away when and one of the photographers apparently became pinned between his vehicle and a parked car, injuring his leg. The Biebs, however, allegedly kept going, prompting police to be called to the scene.
As for the paparazzo, he was purportedly taken by ambulance to a nearby hospital, but no word on the nature of his injury.
Authorities confirm to E! News that officers did respond to a call of an incident at that location, but could not identify the parties involved and said that authorities were investigating it as a traffic collision, not as a hit-and-run as some media outlets have reported.
"LAPD can confirm we are investigating a traffic collision that occurred around 11:45 p.m.," a police spokesman said. "Officers did interview all parties involved and determined there was no hit-and-run. It appears the pedestrian in the roadway was a major factor in the collision."
Bieber's rep could not be reached for comment, and it's unclear whether the photog might file a civil complaint against the 19-year-old singer.
This isn't the first time Bieber's faced scrutiny by L.A.'s Finest. Last month, authorities probed complaints about alleged reckless driving on the part of the "Boyfriend" crooner within the gated Calabasas, Calif., community in which he lives.
Bieber was also accused of battery after he purportedly spit in his neighbor's face in March.
—Additional Reporting by Baker Machado and Nadine Elise Della Pelle