NYC Shooting: Gunman Kills 4, Including NYPD Officer

Shane Tamura

A tragic mass shooting unfolded Monday evening in Midtown Manhattan when 27-year-old Shane Tamura, a former Las Vegas security guard with a documented history of mental illness, opened fire at a high-rise office building on Park Avenue, killing four people, including an NYPD officer, before turning the gun on himself.

The gunman stormed 345 Park Avenue, a 44-story commercial tower housing high-profile tenants like Blackstone, Rudin Management, and the NFL, around 6:30 p.m., according to NYPD Commissioner Jessica Tisch.

Tamura double-parked a black BMW with Nevada plates between 51st and 52nd streets before calmly walking into the building’s lobby carrying a .223-caliber AR-15-style rifle. Surveillance footage shows him opening fire almost immediately:

• First victim: NYPD officer Didarul Islam, a 36-year-old, four-year force veteran, was shot and killed at the entrance.

• Second and third victims: A woman taking shelter behind a pillar and a security guard at the front desk.

• Fourth victim: A man on the 33rd floor, where Tamura later died by suicide after walking the floor and continuing to fire.

• Additional injuries: One person was critically wounded, and four others sustained minor injuries during the chaos.

According to Las Vegas law enforcement, Tamura had a well-documented mental health history. A concealed firearms permit valid through 2027 was found among his belongings, along with a revolver, extra magazines, prescription medication, and a rifle case in his car.

Tamura reportedly missed work at a Las Vegas casino on Sunday and then drove cross-country, passing through Colorado, Nebraska, Iowa, and New Jersey, before arriving in New York City on Monday afternoon.

Investigators believe he acted alone. His motive remains unclear, and authorities are still investigating why 345 Park Ave. was selected as the target.

As gunfire rang out in the lobby and higher floors, chaos spread throughout the building. Witnesses described scenes of panic and confusion.

"I was at work when he came in with an assault rifle and started shooting," said one survivor. "We heard multiple shots from the first floor everyone rushed into a room," recalled Jessica Chen, who was in a meeting with about 150 colleagues on the second floor.

Fallen officer Didarul Islam leaves behind a wife and young child. Mayor Eric Adams praised him as a “brave public servant” who gave his life protecting others. The NYPD flag at One Police Plaza has been lowered in his honor.

This tragedy has reignited urgent debate about mental health intervention, interstate firearm access, and the effectiveness of background checks and red-flag laws.

Critics are calling for better federal coordination on mental health reporting and firearm tracking, while others demand increased building security at major corporate sites.

 Shane Tamura’s calculated mass shooting in Midtown underscores the complex intersection of untreated mental illness, legal gun ownership, and security lapses. With four lives lost including a dedicated NYPD officer New York City is again left mourning, questioning, and demanding action.