In the past week, the FBI and many other law enforcement agencies targeted major child prostitution areas in 16 cities.
The bureau recovered 21 children and arrested 389 adults who were involved in the prostitution. Twelve of the arrests were in Oakland.
The operation was timed to coincide with the fifth anniversary of an Innocence Lost initiative, which has led to the recovery of 433 child victims, according to the FBI.
The Department of Justice and the National Center for Missing & Exploited Children were also part of the joint effort with the FBI.
The FBI gave special thanks to police departments nationwide for contributing to the success of the operation, including the Oakland Police Department.