PITTSBURGH (AP) — The district attorney has demanded that Pittsburgh police change the way they show witnesses photo lineups of criminal suspects in the wake of lawsuits by two men who claim they were falsely identified that way. The Pittsburgh Post-Gazette (http://bit.ly/1qDWjAa ) says the Allegheny County wants police to show witnesses one photo at a time rather than a batch of six or eight at once when asking someone to identify a suspect.