A manhunt is underway in southern New Jersey after a gunman opened fire on two Camden police detectives sitting in their vehicle at a red light.

Authorities are calling the shooting an ambush. Camden County Police Chief J. Scott Thomson said at least one suspect opened fire on the plainclothes detectives Tuesday night.

Thomson says the gunman fired anywhere between 10 and 25 rounds at the detectives, who were sitting in their unmarked vehicle. One of the detectives was able to return fire, but it was not immediately clear if anyone else was shot.

The detectives were taken to an area hospital with injuries that are not believed to be life-threatening.

The Camden County Prosecutor's Office released photos of persons of interest in the case.

Anyone who may have any information is asked to call Major Crimes Detective Matt McKeown at 609-820-7192 or email ccpotips@ccprosecutor.org,