York County District Attorney Tim Barker said he believes Ruth, who died in the exchange of gunfire, had planned to ambush the woman he was accused of stalking.
Police gather for funeral of three Pennsylvania detectives ambushed by gunman
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Barker said he couldn’t immediately say how Ruth got into the ex-girlfriend's house, but he said Ruth had “carefully surveilled the entire residence and the outbuilding areas” and even shot and killed the family dog, a black Labrador, after he entered the home.
Stalking suspect ambushed Pennsylvania police officers, killing 3, says prosecutor
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