After a gunman opened fire in a New York City office building and killed four people, experts share strategies for workplaces to implement to mitigate acts of violence.

The NFL released a statement about the mass shooting at its NYC headquarters Monday night, which left four dead, including a police officer.

Exclusive video shows SWAT teams executing a search warrant at the Las Vegas apartment of Shane Tamura, the man behind Monday's deadly shooting in New York City that left four people dead.

Then officials say the suspect then got into the elevator and headed to the 33rd floor, the headquarters of Rudin Management.

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

NEW YORK (AP) — A man who killed four people at a Manhattan office building bought the rifle he used in the attack and the ...

High school classmates and a coach remembered Shane Tamura as a talented running back. Recently, though, he was apparently ...

Investigators believe Shane Tamura, of Las Vegas, was trying to get to the NFL offices after shooting several people Monday ...

The disease has been diagnosed in more than 100 former NFL players and arisen as an existential threat to the United States’ ...

"It was heartbreaking, shock, still in disbelief," said Walter Roby, the former assistant football coach at Granada Hills ...

Midtown mass shooting victim Julia Hyman had made it into a fortified panic room at 345 Park Ave. when gunman Shane Tamura ...

The medical examiner confirmed that Shane Tamura died from a self-inflicted gunshot wound, but has not yet made a ...