Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday.

Shane Tamura, 27, who fatally shot four people in the building that houses the National Football League's headquarters Monday ...

A New York City police officer who was among the four people shot and killed by a gunman during a rampage at a Manhattan ...

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, ...

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

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

Police say the gunman in the Manhattan office building shooting tried to target NFL offices. In a note found in the gunman's ...

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 NFL, police said.

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

An NFL employee was seriously injured in a shooting at a   Midtown Manhattan office tower Monday where a gunman killed at ...