New Body Points to Frisco Area Multiple Killer Girlfriend found in the trunk of his car By Mary Papenfuss, Newser User Posted Sep 13, 2010 3:37 AM CDT 1 comment Comments Suspected murderer Efren Valdemoro, 38, was shot dead by cops, who then found the body of Valdemoro's girlfriend in the trunk of his car. (AP photo/Hercules Police Department via the San Francisco Chronicle) (Newser) – Investigators believe the body of a man wrapped in plastic and found in a closet of his home was one of at least five victims of a San Francisco area killer shot dead by police. The elderly father of latest victim John Sayles, 35, was found dead with multiple puncture wounds in the same home last month. Two murdered elderly women have also been linked to suspect Efren Valdemoro, 38. Their bodies were found with a cache of explosives. When police shot Valdemoro after a high speed chase, they discovered his girlfriend's body in the trunk of his car, CNN reports.