Among the dead were a police officer, a security guard and two people who worked at companies in the building. An NFL ...

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada late last week, traveling across the country to execute a mass shooting ...

Authorities say the gunman who opened fire in a Midtown Manhattan office building on Monday night -- killing four people and injuring a fifth -- had a history of mental illness and may have been ...