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

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

The $1,400 M4 assault rifle New York City mass shooter Shane Tamura used to kill four people inside a Midtown Manhattan ...

New York City investigators believe a co-worker of the Las Vegas man who killed four, including a police officer, provided a ...

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

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

As law enforcement continues its investigation across the country into the motives behind the horrific shooting that shook ...

The gunman accused of killing four people in a Midtown Manhattan office tower bought the AR-15-style rifle used in the attack ...

Law enforcement sources say Shane Tamura bought the AR-15 style rifle he used to open fire at a Manhattan skyscraper from a former co-worker for $1400. The sources say that former co-worker also sold ...

The gunman who opened fire in a New York City skyscraper, killing four people, including an off-duty cop, bought his $1,400 ...

A supervisor at the Las Vegas casino where Shane Devon Tamura worked legally purchased the gun used in the Midtown Manhattan shooting and sold it to him for $1,400, a law enforcement official told CNN ...