Pittsburgh police are investigating a "medical situation" that left three people dead and four others hospitalized Sunday morning. All seven people were wearing orange paper wrist bands, which may offer clues, Pittsburgh Director of Public Safety Wendell Hissrich said. He said all are believed to be middle-aged men. Authorities responded to a report of an unconscious man around 2 a.m. Sunday on the city's south side. They found a man dead at the scene, Hissrich said. Shortly later, paramedics responded to another man who was "somewhat conscious" and had symptoms similar to that of the first man. He was taken...