Report: NYC shooter's boss at Horseshoe Las Vegas purchased key part of gunman's weapon

Las Vegas Review-Journal on Jul 30, 2025

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Shane Tamura’s supervisor at Horseshoe Las Vegas helped him purchase a key part of the weapon he used to kill four people in Manhattan before turning the gun on himself, according to a report from the New York Post.

New York Police Department Commissioner Jessica Tisch said the 27-year-old Las Vegas resident used an AR-15 style semiautomatic rifle in Monday’s shooting that he assembled using a lower receiver purchased by an associate.

Investigators with the New York Police Department traveled to Las Vegas to search Tamura’s northwest valley Desert Shores home and determine how he came to possess the weapon used in the shooting. Public records show Tamura and his family living in Las Vegas beginning in 2022.

Citing unidentified sources, the Post reported that Tamura’s boss at Horseshoe supplied the Palmetto State Armory lower receiver for the AR-15.

The receiver houses the trigger assembly, pistol grip and other components that allow the weapon to function and is classified as a firearm under federal law. Purchasing a receiver requires a background check.

New York City Mayor Eric Adams also confirmed that authorities had learned that the receiver had been purchased by an associate of Tamura.

“It is undetermined at this time if he played any role at all in planning or carrying out this action,” Adams said. “This is what the investigation would reveal. We are now attempting to identify him and question him at this time.”

Tamura worked in the surveillance department at Horseshoe, the company confirmed, saying they were cooperating with law enforcement.

Tamura had been scheduled to work a Sunday night shift but did not show up, according to Tisch. At that time, Tamura was somewhere between Colorado and the East Coast, on a journey that led him to 345 Park Ave. in Manhattan.

Those killed in the shooting include an off-duty police officer, a security guard, a senior executive and a real-estate firm employee. Others were injured.

Tisch said two groups of NYPD detectives would be in Las Vegas to conduct interviews and execute a search warrant at Tamura’s house. They also planned to visit where he legally purchased a revolver on June 12 using his concealed carry permit that he received from the Metropolitan Police Department.

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