tonight the police chief posted a meeting. reporter: we re told the man moved here from danbury connecticut to pursue some new opportunities, but according to those three suicidal notes something happened. it was in a dark place, so hope faded, and then he orchestrated his killing. a church can provide compassion for those proceeds by suicidal thoughts. tonight, this church in san francisco s mission district was used to provide details of a suicide. a sympathetic chief described the shooting of matthew hoffman . he said hoffman confronted police in the mission parking lot and was asked to leave. instead, he turned and faced the officers. the officers see a but of a gun, he pulls the weapon cobb pointed at the officers. the two sgts. fire their weapons 10 times. reporter: the weapon turned out to be a pellet gun, is bright orange markings covered. the sergeants were forced to pull a trigger on a man who they thought had a real gun. they are second-guessing themselves.