Evidence found at a San Jose home where 11-week-old twin boys were found dead led investigators to suspect that the infants may have been under the influence of the drug PCP. San Jose Police Sgt. Dwight Messimer said the parents, Joanne Ramirez, 22, and Richard Ramirez, 24, were arrested on suspicion of child endangerment with great bodily harm after the simultaneous deaths were reported. He said drugs and evidence of drug activity was found in the house and there were police records of drug-related incidents there. Paramedics found the babies on a couch and an overstuffed chair. Neither was breathing, and they were pronounced dead at the scene. Messimer said results of tests to determine cause of death are not expected for at least six weeks.