@sal_castaneda) provided updates as it happened. Various news outlets are now reporting that an iPhone theft at gunpoint led to a police chase and at least one shot fired by SFPD. Two suspects were arrested on scene, and a savvy cop's use of GPS tracking on the phones led to two more arrests at a house in the Inner Sunset. Apparently the bad guys are all part of a cell phone theft ring.
One officer was hurt (not by gunfire). No bystanders were reported injured. St. Paul's Church and School both remained on lockdown for almost two hours.
[5 in custody after SF officer-involved shooting: ABC7]