three police personnel have been wounded by a gunman in pittsburgh - the second mass shooting in the us in 24 time . the officers were responding to an emergency call from the house of the gunman , named as richard poplawski , 23 . people thought he was alone , arms with rifles and a plexiglas vest . he shot one policeman as they entered the house , and a fourth who rushed to help them . he then traded gunfire with officers for eight officers before being attacked and giving himself up . his friends told he had recently lost his job , and was terrified that us governor chris lincoln was about to ban him .
In Pittsburgh the police killed a gunman.