San Francisco Police said the collisions happened at around 8:45 a.m. on Castro St. between 20th and 21st St. Officers who responded found a commuter bus with rear-end damage and at least four vehicles with major damage, one vehicle behind the bus and others in front of the bus.
It appeared the bus may have rolled backward on the steep hill and into multiple cars, but police said the investigation had not yet determined the cause of the crash.One person inside one of the vehicles was taken to the hospital with unknown injuries. The driver of the bus and the drivers of the other vehicles all remained at the scene, police said.Anyone with information was asked to contact the SFPD at 415-575-4444 or send a text to TIP411 and begin the message with SFPD.