Gunman Targeting NFL Headquarters Kills 4 in Manhattan Office Rampage, Mayor Says

New York — July 29, 2025

A gunman who killed four people inside a Midtown Manhattan office building on Monday was trying to reach the headquarters of the National Football League (NFL) but mistakenly entered the wrong elevator, New York City Mayor Eric Adams said Tuesday.

The attacker, identified as Shane Tamura, opened fire in the lobby of 345 Park Avenue, a skyscraper that houses offices for the NFL, Blackstone, Rudin Management, and KPMG. Surveillance footage shows Tamura exiting a double-parked BMW with an M4-style rifle before walking into the building and firing on multiple people.

Authorities say Tamura, 38, had a history of mental illness. A rambling note found on his body referenced the NFL and expressed anger over what he believed was his undiagnosed chronic traumatic encephalopathy (CTE) — a brain condition linked to repeated head trauma in sports like football. Tamura had played football in high school in California nearly two decades ago.

“He was trying to get to the NFL offices but entered the wrong elevator bank,” Mayor Adams told media outlets Tuesday.

Victims include an NYPD officer

One of the first victims was Didarul Islam, a 36-year-old off-duty NYPD officer working private security. Islam, an immigrant from Bangladesh, had been with the department for three and a half years. He died attempting to protect others during the initial chaos.

“He died as he lived — a hero,” said Police Commissioner Jessica Tisch.

Tamura also killed a woman who tried to escape, a lobby security guard, and another man. After riding the elevator to the 33rd floor, he fatally shot a staff member at Rudin Management, then took his own life.

A message from Blackstone, one of the building’s major tenants, confirmed that one of their employees was also killed, though the individual has not been publicly identified.