PITTSBURGH (AP) — Authorities say a standoff at a Pittsburgh home ended with a man and a woman dead. Police responded to the home early Monday after receiving a report of a man barricaded inside the residence with a possible hostage. SWAT teams were called to the home and officers were soon able to get inside the residence, where they found a woman dead from a gunshot. But the officers retreated and shot several rounds of gas into the house when the barricaded man refused directives to leave the residence. Officers eventually found the man dead.