A lone shooter entered an office building in Midtown Manhattan on Monday afternoon and began firing, resulting in the deaths of five individuals, including a NYPD officer, before taking his own life.

During a press briefing later that day, NYC Police Commissioner Jessica Tisch named the gunman as Shane Temura, a 27-year-old from Las Vegas with a known history of mental health challenges.

Tisch mentioned that Tamura had traveled across state borders, with his vehicle last spotted at 4:24 p.m. Monday in Columbia, New Jersey, shortly before his shooting spree began.

The vehicle was searched by the NYPD’s bomb squad but found to be clear of any explosives. Police said Tamura is believed to have acted alone and there is no longer a threat to the community. 

“According to our law enforcement partners in Las Vegas, Mr. Tamura, has a documented mental health history,” Tisch said. “His motives are still under investigation and we are working to understand why he targeted this particular location.” 

NYPD police respond to reports of an active shooter at 51st St. and Park Ave. in Manhattan, New York, on Monday, July 28, 2025.  (Barry Williams / New York Daily News via Getty Images)

The building Tamura entered and opened fire, 345 Park Avenue, is a commercial building where tenants include the NFL, Rudin Management, KPMG and Blackstone. 

Documents obtained by Fox News Digital indicate Tamura had a concealed carry permit that was issued on June 14 and valid for five years. Tamura also carried a private investigator license and had a misdemeanor for trespassing not amounting to burglary in 2023. 

FDNY firefighters wheel a police officer on a gurney as police respond to a shooting incident in the Midtown Manhattan neighborhood of New York on July 28, 2025.  (Photo by TIMOTHY A. CLARY/AFP via Getty Images)

Earlier records show Tamura played football at Granada Hills Charter in Granada Hills, California, which is about 25 miles northwest of Los Angeles. He had also worked as a security guard at a Las Vegas casino. 

The gunman was armed with a rifle and first opened fire in the lobby of the building on 52nd Street and Park Avenue. He went to another floor and shot people there, sources told Fox News, before going up to the 33rd floor and shooting himself. Police are still searching for a motive in Monday’s deadly shooting.