A gunman killed four people including a New York City police officer when he opened fire inside a corporate building in the heart of Manhattan.
Named by police as Shane Tamura, the suspect later turned the weapon on himself, officials said.
The shooting took place at a skyscraper that is home to the headquarters of both the NFL and investment giants Blackstone.
It happened at the end of the workday in the same part of the city where the chief executive of UnitedHealthcare was gunned down outside a hotel late last year.
What happened in Manhattan?
CCTV footage shows the gunman stepping out of a double-parked BMW armed with an M4 carbine, an assault-style rifle used extensively in the US military, then marching across a public plaza into the building shortly before 6.30pm on Monday.
He quickly opened fire on the NYPD officer as he entered the building before shooting a woman who tried to take cover, police Commissioner Jessica Tisch said at a news conference on Monday night.
He then started ‘spraying’ the lobby with gunfire.
The man went to the elevator bank and shot a security guard who was taking cover behind a security desk and also another man in the lobby, Tisch said.
After taking the elevator to the 33rd floor to a real estate management company, he shot and killed another person on that floor.
The man then walked down a hallway and shot himself, she said.
Who is suspect Shane Devon Tamura?
Commissioner Tisch told reporters the gunman appeared to have acted alone, though his motives remained a mystery.
She said Tamura had a documented history of mental illness and appeared to have driven to New York from Las Vegas over a period of three days.
A widely published photo of the gunman, that CNN said was shared by police, showed him walking into the building carrying his rifle.
Preliminary checks of the suspect’s background did not show a significant criminal history, CNN reported, citing officials.
Another widely circulated photo showed the permit issued to Tamura by the Las Vegas Metropolitan Police Department allowing him to legally carry a concealed firearm.
Caleb Clarke, a former classmate and high school football teammate, told NBC Tamura ‘was the biggest goofball in the world, just a ton of energy, class clown’.
He said the two played together in California until Tamura transferred from a Santa Clarita high school to Grenada Hills High School in 2015, just before their senior year.
Clarke told the broadcaster it seemed as if Tamura was destined for greatness as an athlete, saying: ‘I don’t think he walked around to be like, “Oh, I’ll have NFL games one day.” I think it was more of everybody just telling him how great he was … how special he was.’
What was his motive, and did he leave a note?
Authorities offered no explanation for why Tamura might have singled out the building at 345 Park Avenue, whose tenants include the National Football League, private equity giant Blackstone, the accounting firm KPMG and real estate company Rudin Management.
CNN and NBC cited unnamed officials as saying the shooter had a grievance with the NFL and its handling of CTE, a brain condition linked to head trauma.
The gunman had a note in his pocket saying he suffered from CTE, the news channels said, quoting a source with knowledge of the investigation.
He also asked in the note that his brain be studied after his death, it was said.
How many died in the shooting and who were the victims?
The officer killed was Didarul Islam, 36, an immigrant from Bangladesh who had served as a police officer in New York City for more than three years.
‘He was doing the job that we asked him to do. He put himself in harm’s way. He made the ultimate sacrifice,’ Commissioner Tisch said. ‘He died as he lived. A hero.’
One man was seriously wounded and remains in critical condition, Mayor Eric Adams said. Four others got minor injuries attempting to flee.
The mayor said officials are still ‘unraveling’ what took place.
The NFL has confirmed one of their employees was wounded in the attack.
‘One of our employees was seriously injured in this attack. He is currently in the hospital and in stable condition,’ NFL Commissioner Roger Goodell said in a statement to employees.
‘NFL staff are at the hospital, and we are supporting his family.’
He added that the football organization believed that all of its other employees were safe and accounted for.
‘We are deeply grateful to the law enforcement officers who responded to this threat quickly and decisively and to Officer Islam, who gave his life to protect others,’ Mr Goodell said.
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