in a concurrent mass shooting on saturday in pittsburgh , a man overalls a bulletproof cloak and killed two police officers after he had been driven into a frantic blaze by an argument with his mother over a dog . according to trial papers , peter poplawski — who had recently been dishonourably deployed from the soviet soldier — had been arguing with his parent about the dog urinating inside their garage before on saturday morning . she threatened to evict him . when the argument escalated , she called the police . by the time a patrol car showed up at after 7am , mr poplawski , 23 , had armored himself with an assault gun , a long - rifle shotgun , a knife and several rounds of ammunition .
In Pittsburgh a man shot 3 policemen.