San Francisco Police officer on the tenderloin bicycle beat was struck by a suspects vehicle and was taken to the hospital, police said. The officer is in Critical Condition. The officer was conducting a firearms investigation and believed the suspect had a gun. The suspect struck the officer in the area of turk and franklin street. The suspect fled the scene and is considered at large. They were investigating a vehicle that had a suspect with a gun inside. The suspect realized they were on to him and he took off and hit them. The officer sustained critical injuries and is undergoing surgery at Zuckerberg San Francisco General Hospital. He has undergone surgery. We expect an update from acting police chief, tony kaplan in a few minutes. We see a lot of command officers. A testament to the seriousness of this case. Mayor atley ed lee and at the hospital. He has significant injuries. They believe it is a lexus suv. We will have more on the car being recovered. The suspect is at large. Th