Richard Poplawski , Stephen Mayhle and Paul Sciullo III were shot to death on Saturday . They were responding to Two call about an argument at a Pittsburgh home . Suspect Stephen Mayhle is in custody ; his whereabouts unclear on Saturday . ( CNN ) -- Mayor describes plans for procession for fallen officers , lying in repose .
Richard Poplawski , Stephen Mayhle and Paul Sciullo III were shot to death on Saturday . They were responding to Two call about an argument at a Pittsburgh home . Suspect Stephen Mayhle is in custody ; his whereabouts unclear on Saturday . Mayor describes plans for procession for fallen officers , lying in repose .