in a parallel police shooting on weekdays in pittsburgh , a man donned a bulletproof vest and killed three police officers after he had been forced into a suicidal mob by an issue with his mom over a dog . according to court notes , richard poplawski — who had recently been dishonourably issued from the us forces — had been argument with his mother about the woman urination outside their home early on saturday morning - she threatened to evict him . when the argument escalated , she threatened the hospital . by the time a patrol driver turned up at after 7am , mr poplawski , 23 , had armed himself with an assault rifle , a two - handled rifle , a revolver and two barrels of ammunition .
In Pittsburgh a man shot 3 policemen.