Federal, state and local authorities in California have made more than three dozen arrests and recovered 27 juveniles as part of an annual national crackdown on child sex trafficking.
In Southern California, 12 of those arrests and 10 recoveries were in Los Angeles, and six arrests and two recoveries were in San Diego.
FBI officials announced the results of last week's national roundup on Monday as they try to draw attention to what they describe as a pervasive problem. They also say many people don't recognize it as an issue in the U.S.
In a video released by the FBI, Dani Geissinger-Rodarte, a victim specialist in the Seattle Division, talks about working with the victims of human trafficking:
VIDEO: FBI victim specialist
The FBI also shared the first-person account of a young woman who became a victim of underage prostitution and human trafficking:
Agents urged parents to monitor their children's social media accounts as a way of thwarting predators.
The Sacramento-based FBI region made seven arrests and recovered nine juveniles. There were 13 arrests and six recoveries in the San Francisco region.