(KRON) -- Berkeley police said a passenger was found with a loaded handgun Wednesday night after a car was pulled over for fake license plates. SF baseball bat attack suspect sought by police Police said the incident started when the vehicle was spotted near the Berkeley/Oakland border. During the traffic stop, police said they discovered the driver had an outstanding warrant from a previous theft case in Berkeley, and that "one of the three passengers was known to carry firearms." Police said when officers tried to the search the suspects, the aforementioned passenger tried to flee before quickly being taken into custody along with the vehicle's driver. "A loaded handgun was found concealed in his underwear, leading to his arrest," said police in a social media post Friday. "During the jail intake process, staff also found a paper bindle of powder cocaine hidden in his clothing." Photo courtesy of Berkeley Police Department. It is not clear what charges the suspects face. ...read more read less