Security ramped up for annual Rockefeller Christmas tree lighting after gunman killed UnitedHealthcare CEO

Security was ramped up for the annual lighting of the Rockefeller Center’s iconic Christmas tree Wednesday evening, hours after a masked gunman shot and killed UnitedHealthcare’s CEO outside a midtown Manhattan hotel just a few blocks away. 

Chief of Department Jeffrey B. Maddrey said there would be a "massive presence" of police, including additional officers in the subway.

"This is a terrible event, but people are going to go on and enjoy the tree lighting tonight," he said.

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UnitedHealthcare CEO Brian Thompson was shot and killed at close range outside the Hilton Hotel Wednesday morning. 

In the chilling video obtained by Fox News Digital, Thompson is seen walking down a New York City sidewalk when a masked man wearing a black hooded jacket and a backpack fatally shoots Thompson before fleeing the scene on a bike, disappearing into Central Park. 

The suspect was still at large as of Thursday morning. 

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The violence didn’t stop crowds from attending New York City’s annual tradition later in the evening. Fifty-thousand multicolored lights illuminated the iconic tree to cheers from the gathering crowds. 

The giant Norway spruce, which this year hails from a tiny Massachusetts town, is also topped with a Swarovski star crown featuring 3 million crystals.

The 74-foot-high tree was cut down last month in West Stockbridge and trucked to Rockefeller Plaza. Wednesday night's ceremony marked the culmination of the tree's long journey to New York, which began in 2020 when the center's head gardener spotted the tree and asked its owners if they'd consider donating it.

The famous holiday attraction, located above the Rockefeller Center ice skating rink, will be on view through mid-January. On Christmas Day, the tree will be lit for 24 hours.

Once the holiday season is over, the tree will be used for lumber for Habitat for Humanity.