A registered sex offender was arrested Tuesday on suspicion of possessing child pornography, according to Livermore police.
Brett Bartlett, 30, had gone to the Livermore police station for his annual sex offender registration.
He was convicted in 2005 in Santa Clara County for having oral sex with a person under 16 years old. That conviction requires him to register as a sex offender.
While Bartlett was in the police station, detectives asked if they could do a search of his vehicle.
Inside the vehicle, detectives found a computer that they say had numerous images of child pornography.
Investigators are still attempting to identify the victims from the pornographic images.
Police are recommending any parents who know that their child has had contact with Bartlett speak with their children about the nature of any contacts they have have with him.
Police are asking that anyone who has any information about crime involving Bartlett to contact Livermore police Lt. Matthew Sarsfield at 925-371-4730.