(In the U.S) Police investigate motive behind deadly mass shooting in Manhattan office tower

 

A mass shooting in midtown Manhattan on Monday evening left four people dead, including a police officer and a senior Blackstone executive. The gunman, identified as 27-year-old Shane Tamura from Las Vegas, drove cross-country before storming the 33-floor skyscraper at 345 Park Avenue with a military-style rifle. The building houses major tenants such as the NFL headquarters, Blackstone, KPMG, and Rudin Management.

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Tamura first opened fire in the building's lobby, fatally shooting NYPD officer Didarul Islam, a Bangladeshi immigrant who had been with the force for over three years. He then killed two men and a woman before riding an elevator to the 33rd floor. There, he fatally shot another person inside the offices of Rudin Management before turning the gun on himself. One victim was gravely wounded and remains in critical condition. An NFL employee was injured but is stable in hospital.

One of the dead has been confirmed as Wesley LePatner, a senior managing director at Blackstone and CEO of its Real Estate Income Trust. The company issued a statement expressing deep sorrow at her death. Increased security measures have since been introduced by the NFL, according to a memo by Commissioner Roger Goodell.

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Authorities said Tamura acted alone and had no major criminal history, though he had a documented mental illness. He was carrying an M4 carbine rifle and a permit for a concealed weapon issued in Las Vegas. A loaded revolver, medications, and a backpack were recovered from his car parked outside the building.

New York authorities are investigating the motive behind Shane Tamura’s deadly attack in Manhattan, which ended in his suicide. Early findings point to mental illness and unresolved trauma from his past. According to police, Tamura left behind a handwritten manifesto referencing chronic traumatic encephalopathy (CTE) a brain condition linked to repeated head injuries, often associated with American football.

Reports from Bloomberg and law enforcement officials say Tamura claimed the NFL had failed to address CTE among its players. The document mentioned his own struggles with head trauma after a football-related injury ended his playing days. Investigators believe the NFL’s presence in the building was not a coincidence and that Tamura may have specifically targeted its offices.

Mayor Eric Adams confirmed there were early signs of intent focused on the NFL. However, other victims were unrelated to the league, including Blackstone executive Wesley LePatner. Police Commissioner Jessica Tisch noted that Tamura entered the lobby, killed Officer Islam, and shot several others before heading to the upper floors. Strangely, he allowed one woman to pass by without harm.

Although Tamura had a license to carry a concealed firearm in Nevada, his use of a military-grade M4 rifle raised further questions about access to such weapons. The rifle was used to commit all the killings, while a revolver was found later in his vehicle.

So far, no accomplices have been identified, and Tamura is believed to have acted alone. The case has renewed discussions on mental health, gun access, and building security in high-profile corporate spaces. The NYPD continues to gather details, review surveillance footage, and analyze the contents of the manifesto.

The shooting has deeply shocked the city and sparked renewed concern over targeted workplace violence and untreated mental health issues in former athletes.

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