A Bay Point father found a 29-year-old registered sex offender in his 12-year-old daughter's bedroom late last month, according to the Contra Costa County Sheriff's Office.
The parent found the man in his home in the 1000 block of Clearland Drive and detained him until deputies arrived, sheriff's officials said.
The sheriff's office identified the man as Jose Simentel of Hayward. He was arrested and booked into the Martinez Detention Facility.
Investigators learned that Simentel is a registered sex offender. He had allegedly made friends with the 12-year-old girl and kept in contact with her via the Kik Messenger.
He has since been charged with five counts of child molestation and one count of burglary, according to the sheriff's office. He remains in custody on $3.5 million bail.
Investigators are looking into the possibility that there may be other victims. Anyone with any information has been asked to call the sheriff's Investigation Division at 925-313-2743.
