Police seek clues to motive behind deadly mass shooting in Manhattan office tower

New York City homicide detectives sought clues connected Tuesday arsenic to what possessed a Las Vegas antheral to thrust cross-country and tempest into a Midtown Manhattan bureau operation to unfastened occurrence with a subject rifle, sidesplitting 4 people, including a policeman.

Gunman Shane Tamura, 27, brought the carnage to an extremity not agelong aft it began connected Monday evening by fatally shooting himself successful the thorax connected the 33rd level of the Park Avenue skyscraper, which houses the NFL office and offices of respective large fiscal companies.

New York Police Commissioner Jessica Tisch told reporters Monday nighttime that the gunman appeared to person acted alone, though his motives remained a mystery.

Tisch said Tamura had a documented past of intelligence unwellness and appeared to person driven to New York from Las Vegas implicit a play of 3 days.

Tamura carried retired his rampage, according to Tisch, equipped with an M4 carbine, an assault-style firearm utilized extensively successful the U.S. military.

A loaded revolver was aboriginal recovered from the achromatic BMW conveyance Tamura had near double-parked extracurricular the bureau tower, on with a backpack and medicine medications, she said.

Authorities offered nary mentation for wherefore Tamura mightiness person singled retired the gathering astatine 345 Park Avenue, whose tenants see the National Football League, backstage equity elephantine Blackstone, the accounting steadfast KPMG and existent property institution Rudin Management.

Among the 4 victims slain was Didarul Islam, 36, a New York Police Department serviceman who immigrated to the U.S. from Bangladesh. Mayor Eric Adams described the officer, who had been connected the unit for astir 3 1/2 years, arsenic a "true blue" hero.

Authorities offered fewer details astir the 3 different victims - 2 men and a woman. A 3rd antheral was gravely wounded by the gunfire and was "fighting for his life" successful a adjacent hospital, the politician said.

According to recap of the shooting spree outlined by Tisch astatine a late-night quality conference, Tamura entered the skyscraper's lobby, turned to his close and instantly opened occurrence connected the NYPD officer, who was assigned to the building's information detail.

The fishy past proceeded to sprout a pistillate and 2 men arsenic helium sprayed the lobby country with gunfire but inexplicably allowed different pistillate to walk him unharmed earlier helium took the elevator to the 33rd-floor offices of Rudin Management. There, helium fatally changeable his last unfortunate earlier taking his ain life, Tisch said.

A wide published photograph of the shooter, which CNN said was shared by police, showed him walking into the gathering carrying his rifle. Preliminary checks of the suspect's inheritance did not amusement a important transgression history, CNN reported, citing officials.

Another wide circulated photograph showed the licence issued to Tamura by the Las Vegas Metropolitan Police Department allowing him to legally transportation a concealed firearm.