Gunman opens fire inside midtown NYC skyscraper, kills self; NYPD officer wounded

New York City police responded to reports of gunfire at a Park Avenue skyscraper. The building houses financial firms and the National Football League headquarters. Initial reports indicated a gunman opened fire, wounding a police officer and a bystander. The gunman reportedly barricaded himself inside the building. The FBI is assisting the New York Police Department with the investigation.