Alameda county Sheriffs Office investigators said they responded to a call for a welfare check. One of the residents was late to an appointment or meeting spurring the 911 caller to call. Deputies then discovered a man and woman dead inside the mobile home and a third person a man in his 30s was still inside the home. Its an obvious sign of death. We do believe we recovered the murder weapon. We wont say what the murder weapon is at this point, so we have information that only the murderer will know. He says the deputies were surprised to find the man inside the home, but he did not elaborate what the man was doing when deputies arrived. Detectives are now interviewing him to see if he lived there, what his relationship with the victims was and determine if hes their murder suspect. Deputies are not releasing the names of the victims until next of kin can be notified. Live in Castro Valley, katie utehs. A man knocked out by a transformer explosion in San Francisco is released from the