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

No ruling has been made yet on whether Tamura was suffering from the disease chronic traumatic encephalopathy (CTE), which he claimed to have had.

Park Ave. gunman Shane Tamura bought the assault rifle he used to kill an NYPD cop and three civilians before taking his own life inside a Midtown Manhattan office building from a friend and co-worker ...

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

New photos provided to FOX 5 NY by police sources show the inside of the vehicle driven by Shane Tamura, who killed four ...

Officials and multiple communities continue to mourn and offer prayers and support for the families of the four people shot ...

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

Las Vegas casino supervisor reportedly sold shooter the AR‑15 used in the NYC shooting. Authorities continue probing mental health and weapon purchase.

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

The suspected NYC skyscraper shooter reportedly blamed the NFL for brain disease in a note found after the incident.

NYPD detectives searched the shooter's studio apartment in Las Vegas where they found what law enforcement sources described ...