Investigators are seeking additional victims of a convicted sex offender who allegedly kidnapped and raped a female victim in Hollywood overnight between Friday, July 17, and Saturday, July 18.

The suspect, Joaquin Armando Rivas, 51, was taken into custody in the 600 block of North Serrano Avenue on July 18 and is being held on $10 million bail.

Police are releasing very few details about the case because it involves an alleged rape. The suspect allegedly saw the victim at approximately 8:30 p.m. on Sunset Boulevard, stopped and offered her a ride, said Detective Asia Hodge, with the Los Angeles Police Department’s Operations West Bureau, Special Assault Section. The victim willingly accepted the ride, Hodge said, but allegedly was rendered unconscious and awoke the next morning at an undisclosed location. She left and called police, Hodge said.

The detective would not confirm whether Rivas lived on Serrano Avenue, but said he was arrested when a search warrant was served at a residence at that location. Hodge said police are also investigating another location nearby that may be related to the crime.

Rivas has a previous conviction in 2006 for sexual penetration with a foreign object by force or fear and was released from custody in 2009, according the Megan’s Law website, which provides information on registered sex offenders. His address is listed on the website as being in Chatsworth.

Hodge believes Rivas was targeting victims and asked anyone with further information to come forward.

“He is a registered sex offender. At this point we believe he lured [the] victim and possibly other victims,” Hodge added. “Based on the facts and information we know, we are probably dealing with a person who is a sexual predator.”

Court proceedings in the case are pending. Anyone with information is urged to call (213)473-0440. During weekends and off-hours, call the LAPD’s hotline at (877)LAPD247.