The San Francisco medical examiner’s office has confirmed today the identity of a 27-year-old man who shot and killed himself Saturday night after police officers stopped a vehicle because he was a person of interest in a homicide earlier this week.David Wehrer, a San Francisco resident, was located after police received a tip about his location. Wehrer had been suspected of a homicide on Castro Street on Tuesday, as well as an attempted bank robbery and carjacking in the West Portal neighborhood later that day.Officers spotted the vehicle described in the tip, and attempted a traffic stop at about 8:15 p.m. Saturday near the intersection of McAllister and Baker streets, according to police Sgt. Wilfred Williams.The driver of the vehicle complied with the traffic stop, but because officers could not see into the rear windows of the vehicle, an officer opened the right rear passenger door of the vehicle, and saw a person’s leg in the back seat, Williams said.The officers attempted to pull the man out of the vehicle, and heard a single gunshot. The officers backed away from the vehicle, and saw the man step out of the vehicle and fall to the ground, according to Williams.The man, later identified as Wehrer by the medical examiner’s office, was taken to San Francisco General Hospital where he was pronounced dead at 9:07 p.m., Williams said.The driver was questioned after the incident but was not taken into custody, he said.Wehrer was sought as a person of interest in the death of Robert “Bobby” Christopher inside the apartment at 98 Castro St. at around 6:35 p.m. Tuesday. Wehrer was believed to have been seen with Christopher and visited his house recently, according to Williams.Christopher is the 30th homicide victim in the city this year.