NYPD officers were seen in front of the Hilton Hotel, on 6th Avenue, performing chest compressions on Brian Thompson, 50, who was shot repeatedly upon arriving at the hotel around 6:45 a.m. to attend a conference, Fox 5 video shows.

EMTs quickly arrived to bring Thompson to Mount Sinai Hospital, with half a dozen officers seen helping lift the victim onto a stretcher.

Despite the quick response, Thomas succumbed to his injuries, police said.

Police sources told The Post that the suspect waited for Thompson outside the hotel and fired at him from a distance before fleeing the scene.

Photos from outside the hotel show the masked suspect holding a long handgun as he fired at Thompson. Sources told CBS News that the gun was equipped with a silencer.

The suspect, who has yet to be identified, was seen wearing a dark hoodie, black face mask, and black and white sneakers. He was also carrying a grey backpack.

After the fatal shooting, the masked man fled through the Ziegfeld alleyway, hopping on a bike and riding down 6th Avenue.

Officials said no arrests have been made, and the investigation is still ongoing.

NYPD Police Commissioner Jessica Tisch said the shooting looks to be a “premeditated, preplanned, targeted attack.”

NYPD Crime Stoppers has put out a $10,000 reward for information regarding Thompson’s murder.

Andrew Witty, the CEO of parent company UnitedHealth Group, said the firm had been holding its Investor Day conference at the hotel on Wednesday.

UnitedHealth Group serves as the largest private insurer in the nation and employs more than 100,000 people across America. It is ranked fourth in the Fortune 500.

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UnitedHealth Group serves as the largest private insurer in the nation and employs more than 100,000 people across America. It is ranked fourth in the Fortune 500.