San Francisco police investigators returned today to the Ingleside home near City College of San Francisco where five people were found dead Friday morning.
Police Cmdr. Lyn Tomioka said the crime scene at 16 Howth St. contained too much information to process in a single day.
"It was a very violent homicide scene, as most homicide scenes are, but this was made more complicated by the number of victims," Tomioka said.
Investigators are still trying to determine what led to the multiple homicides, which were reported at 7:47 a.m. at 16 Howth St. in the city's Ingleside neighborhood.
A family member with a key entered the two-story home Friday morning and found three people dead, then called 911. Officers then arrived and found the three victims, and also found two others elsewhere in the home, she said.
Police are still trying to determine how the victims, three women and two men, were killed. On Friday, police Chief Greg Suhr said some had been shot.
A man was found in the threshold of the home, while a man and woman were found in the garage, another woman was found upstairs and a third woman was found downstairs, Suhr said.
The identities of the victims, all of whom are Asian, have not been released by the medical examiner's office, but Tomioka said Friday afternoon that four of them are family members.
The case is believed to be isolated to the house and there is no threat to the public, she said.
"(Investigators) absolutely do not believe that this was a random act of violence," she said Saturday.
Howth Street between Ocean and Geneva avenues was closed for much of Friday while police continued their investigation. Saturday, the house where the crime took place and two adjacent houses remained cordoned off by police tape.
Several bouquets of flowers lay on the sidewalk, one with a note reading, "R.I.P. Seff, you'll be missed."
Mayor Ed Lee released a statement Friday afternoon about the deaths, calling them "a terrible tragedy."
He said, "I extend, on behalf of the city, our support and sympathy to all family members and friends of the victims involved in this crime."