Authorities have now identified all four killed in Monday night's mass shooting inside a Midtown Manhattan skyscraper. The ...

The man who killed four people at a Manhattan office building bought his AR-15-style rifle and getaway car from his Las Vegas ...

The deadly shooting at a New York City high-rise office building Monday night raises new questions for CEOs and businesses as ...

Four people were killed on Monday when a man, identified by police as Shane Tamura, walked into the lobby of 345 Park Avenue ...

The attack on a seemingly secure building has rattled workers and prompted managers to examine whether they are adequately ...