in a subsequent small execution on saturday in pittsburgh , a teenager donned a vests vest and killed three police officers after he had been driving into a vicious rage by an arguing with his stepfather over a dog . according to court papers , richard poplawski — 25 had earlier been dishonourably discharged from the union marines — had been arguments with his family about the dog urinating against their home early on saturday morning after she offered to evict him . when the violence erupted , she calls the constabulary . by the hour a patrol driver turned up at after 7am , george poplawski , 23 , had unarmed himself with an outdoor rifle , a long - arm rifle , a pistol and several rounds of winchester .
In Pittsburgh a man shot 3 policemen.