PITTSBURGH (AP) — Authorities say a dispute between a landlord and tenant in a Pittsburgh neighborhood ended in a shooting that left one man dead and another being questioned by police. The shooting occurred early Monday. A preliminary investigation determined that a stun gun and a gun were used in the shooting, but further details were not disclosed. Authorities did not say what sparked the dispute. Authorities say a man found inside the house had been shot once in the chest and was pronounced dead.