Overview

• Officers responded to a welfare check at 1:23 p.m. PDT on the 900 block of Monterey Boulevard.
• Four individuals were found unresponsive inside the residence and were pronounced dead at the scene.
• SFPD says the evidence indicates a criminal act, and the deaths are being treated as suspicious.
• The Homicide Detail is leading the case while the Office of the Chief Medical Examiner conducts a parallel review to determine cause and manner of death.
• Police have not released the victims' identities or announced any arrests and say the incident appears isolated with no general threat to the public.