Police said Tuesday that four fires set across San Francisco from Friday to Monday and extending over the Memorial Day weekend were all arsons.
The first blaze was reported about 5:30 a.m. Friday at 4037 22nd St. in Noe Valley, where the porch of a home was burned. No injuries were reported, but the fire spread to both neighboring buildings. The 72-year-old homeowner was uncooperative with police.
Next door, a family with a 14-year-old daughter and 9-year-old son “woke up to the sound of crackling” and ran from their house when they saw flames, Officer Carlos Manfredi said.
Fire Department spokeswoman Mindy Talmadge said the fire was suspicious because “the point of origin was in front of the building.”
Investigators are still determining the cause of the blaze.
About 5 a.m. the next morning, a portable toilet was set on fire near Beach and Avila streets in the Marina.
It was the seventh portable toilet fire reported to police this year, with three this month alone.
On Sunday night, someone set a car on fire in the 200 block of Napoleon Street, just southeast of the Cesar Chavez Street exit off U.S. Highway 101.
The car was towed from the scene and arson investigators are determining the cause of the fire.
And in the fourth fire, reported Monday, a 59-year-old man's apartment on Sacramento Street near Steiner Street was burned around 5:41 p.m. Police determined that to be an arson when a neighbor told officers they saw a woman “walking casually toward the alley” away from the burning building.
Manfredi said the neighbor knew the woman, who she believes resides in the building and may have mental health issues.
Police have no video surveillance of the fire.