During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

Nevada has a very liberal approach to gun ownership. New York, although far more liberal than it used to be, is still way ...

The man who shot four people dead with an assault-style rifle inside a Midtown Manhattan skyscraper was carrying a "suicide ...