A 6-year-old boy drowned at the Castro Valley High School Swim Center on Monday during a trip with his daycare, according to the Alameda County Sheriff's Office.
Just before 2:15 p.m., Alameda County fire and medical personnel responded to calls about a possible drowning at 3979 Mabel Ave., according to the sheriff's office.
They arrived to find lifeguards giving CPR to 6-year-old Paul Sniffen of Castro Valley at the side of a pool. Paul was transported to Eden Hospital, where he was pronounced dead.
Investigators later determined that Paul was at the pool for the day with a Castro Valley-based childcare service, and that his parents were not present at the time of the drowning.
At some point, Paul went from the center's shallow pool to its deeper pool, according to the sheriff's office. It was not immediately clear who allowed the boy to go to the deeper pool or if he went on his own.
Lifeguards discovered Paul in about four feet of water and performed a water rescue before administering CPR. The Alameda County coroner's bureau determined the cause of death was drowning.
Sheriff's investigators were in the process this afternoon of interviewing 15 people as a result of the drowning. Anyone with information is asked to call Sgt. Dave Dickson at (510) 667-3921.