Police officers gather at the crime scene on Fairfield St. in Pittsburgh. 23-year-old Richard Poplawski shot five officers, killing three of them, after police responded to a domestic disturbance call. (Ross Mantle / Getty Images)
A sniper waits on a roof directly across the street from the shooting, as tactical officers stand atop an armored vehicle in the shooter’s front yard. Officers Eric Kelly, Stephen Mayhle and Paul Sciullo III were killed by the gunman. (JC Schisler / Associated Press / Tribune-Review)
The mother, left, and grandmother of gunman Richard Poplawski leave their home in the Stanton Heights area of Pittsburgh. (John Heller / Associated Press)
Relatives gather near the house of the gunman. (John Heller / Associated Press)
Police escort a female relative of one of the policemen shot Saturday morning. (John Heller / Associated Press)
Police officers leave the scene of the shooting. (Ross Mantle / Getty Images)
