San Francisco Police Department officers conducted a well-being check at a home on Westwood Highlands' Monterey Boulevard and found four deceased people on Wednesday afternoon.
The San Francisco Chronicle reported that two of the dead were children and obtained information that the brother of one of the occupants visited the home to do a well-being check and found the bodies.
"The San Francisco Office of the Chief Medical Examiner is conducting a parallel investigation and will determine cause and manner of death," according to police.
Police said the case appears to be an isolated incident and there is no general threat to the public.
The SFPD Homicide Detail is leading this investigation.
Anyone with information is asked to contact the SFPD at 415-575-4444 or text a tip to TIP411 and begin the message with SFPD.
Note: This story was updated Thursday morning.
