Bullets flew in Manhattan’s trendy Chelsea neighborhood over the weekend, leaving a man dead outside an upscale art gallery and three others wounded in separate shootings, police and sources said Sunday. 

One of those injured was a female, off-duty, assistant deputy warden at Rikers Island, police sources said.

The city Department of Corrections higher-up was hurt when deadly shots flew outside the Marlborough Art Gallery at the Chelsea Arts Tower at 545 W. 25th St. just after 10:15 p.m. Saturday, police said. 

Police said they found three people, including Assistant Deputy Warden Janae Gregg, with gunshot wounds at the scene, which was also near the ritzy Lavan 541 events venue. A pool of blood — and a shattered pair of Louis Vuitton glasses — remained at the site by midday Sunday. 

Gregg, 32, suffered non-life-threatening injuries in the crime, which left passers-by shocked Sunday.

“We were just walking down the High Line [park], and I noticed the police blocking the traffic, and now we’re walking over the crime scene?” said Oliver Breden of Britain, one of several tourists stunned at the bloodshed as they milled about the chic neighborhood.

“It’s a bit of a shock, but I guess this is what New York is like today,” said the visitor, who lives in Newcastle. “Everyone here has a gun. It’s crazy. The police don’t even have guns where we’re from. Nobody does.”

Rasithamar Grant, 42, of Queens had been shot multiple times and was transported by EMS to Bellevue Hospital, where he was pronounced dead, police said.

Gregg was shot in the leg and taken by EMS to Bellevue, where she was in stable condition late Saturday.

A 37-year-old man was shot multiple times in both legs and was privately transported to Lenox Hill Hospital, where he is in stable condition, according to police.

“I hear two shots — boom-boom!” said a nearby parking-garage attendant who would only give his name as Tommy. “Two shots, maybe three. I pulled the gate down immediately.

“The lady was screaming, ‘Waah, waah!’ She was saying, “Call the ambulance right now! Call the ambulance right now!’ “

Rebecca Mileham, another tourist from London strolling by the shooting scene Sunday, said, “I assumed it was a film set.

“I just thought they were filming for ‘CSI,’ ” she said. “It’s a city, things happen. I’m not really shocked being from London.”

Another local who also works at a nearby parking garage said the gunman dashed right past him after the shots rang out.

“Right here,” he said. They run here. It’s crazy. I almost lose my life!”

The second shooting in the neighborhood occurred around 3:30 a.m. Sunday, when a 32-year-old man was shot outside 101 W. 23rd St.

Sources said the victim, identified by sources as Brandon Grant, was paroled last year in a Bronx murder case and was being sought on a warrant when he was shot. He is no relation to the dead victim in the earlier shooting, police sources said.

Records show Brandon Grant served more than seven years behind bars on a second-degree murder and assault conviction and was paroled Dec. 13, 2021.

He also has a series of other prior busts, including on rape charges. 

Details on the outstanding arrest warrant against him were not immediately available. 

Police have not determined a motive for the shooting. 

“Unknown male walks up to him and shoots him in the chest,” a police source told The Post. 

Alex Waleed, who works at a neighborhood smoke shop near the scene of the shooting, said the victim ran down the street after he was shot until he finally collapsed outside a local Dunkin’ Donuts. 

“What the f–k?” Waleed said. “I’ve been in Chelsea for nine years, and it’s never been like this. It’s insane. I’m fed up with this s–t. It’s getting too nuts out here.”

The two Chelsea shootings do not appear to be connected, sources said.

While murders and shootings are down in the city, crime overall is up 29.1% through November 6, according to NYPD data. Felony assaults, rapes and robberies have all risen by double digits.