Here's how NFL players, coaches and executives reacted to a mass shooting at the league's office building in Manhattan: ...

The 27-year-old man who shot and killed four people at a Midtown office building on Monday carried a note in his pocket, ...

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

The injured NFL employee in the New York City shooting has been identified as Craig Clementi, per reports. Here's the latest ...

NFL Commissioner Roger Goodell spoke publicly for the first time since the Manhattan office shooting, saying, "It's just ...

Investigators believe Shane Tamura was trying to get up to the NFL offices after shooting several people in the lobby of the ...

Two teams NYPD detectives headed to Las Vegas Tuesday, to execute search warrants at Shane Tamura's home and at a gun store ...

The gunman who killed four people in a midtown Manhattan office building left a suicide note indicating that he was targeting ...

The New York City office building at 345 Park Avenue where a deadly shooting occurred serves is the headquarters of ...

Shane Devon Tamura, 27, identified by the NYPD as the Midtown Manhattan office building shooter/Obtained by ABC News(NEW YORK ...

Instead of calling 911 to get help for himself, authorities say the NFL worker called his colleagues to alert them of the danger headed their way.