Fresno County sheriff's detectives arrested Christopher Contreras, 26, along with 33 other men during an undercover operation a couple of months ago.
Sheriff's officials said Contreras spent less than a day in jail before being released after posting $1,000 bail.
Investigators searched through Contreras's computer and photo to see if there are possibly more victims.
Anyone with information can call Valley Crime Stoppers at 559-498-7867.