An abortion clinic was slightly damaged in an early morning arson fire Tuesday, the fifth such attack in California this month.
The clinic at the Cathedral Professional Building was hit shortly before 6:30 a.m., said San Francisco Fire Department arson investigator Marshall Granger.
It was unoccupied at the time and no one was injured.
It appeared someone pushed a tire with flammable liquid through a clinic window and ignited it, investigators said. The same method was used in the first two attacks, federal investigators said.
Mayor Frank Jordan visited the scene and condemned the violence.
“This kind of activity is totally unacceptable and something we will not tolerate in San Francisco,” the mayor said.
The string of fires began in a Ventura County family planning clinic on Feb. 9 and have moved up the coast. Three days later, arsonists hit a Santa Barbara doctor’s office.
The most serious blaze occurred Feb. 15 when a fire badly damaged the Planned Parenthood clinic in San Luis Obispo.
On Feb. 21, someone threw lighted railroad flares on top of a Santa Cruz County medical clinic where abortions were performed.