No Suspects Outstanding After 4 Found Dead In San Mateo Home: Police

SAN MATEO, CA — The deaths of four people, including two children, found inside a San Mateo home appeared to be an isolated incident and that one of the adults was responsible for the killings, police said Tuesday.

Officers discovered the bodies during a welfare check Monday morning on the 4100 block of Alameda de la Pulgas. Police said no one answered the door when they arrived, and a check of the perimeter revealed no signs of forced entrance. The officers accessed the home through an unlocked window and found a man, woman, and two children dead inside.

Officials said the two children were found inside a bedroom, and their cause of death remains under investigation. According to police, the man and woman were found inside a bathroom with fatal gunshot wounds near a 9mm pistol with a loaded magazine.

The Criminal Investigation Bureau and San Mateo County Crime Lab responded to the scene and collected evidence from the home. The bodies were taken by the San Mateo County Coroner for identification and next-of-kin notification.

"Based on the information we have at this time, this appears to be an isolated incident with no danger to the public as we are confident the person responsible was located within the home," police said Tuesday. "This investigation continues as detectives work to gather evidence, speak to witnesses and family members, and determine a possible motive."