President Trump attended a private fundraiser at his Mar-a-Lago resort on Saturday evening, without informing the press corps that follows him and reports on his movements.

Trump made an unexpected stop at a fundraiser for Boston’s Dana-Farber Cancer Institute held at his resort in Palm Beach, Fla., the Washington Post reported.

The event was not on his schedule.

A video posted on Instagram shows Trump arriving at the private fundraiser, where he was met with cheers. More than 800 people attended the event, deputy press secretary Sarah Huckabee Sanders told reporters Sunday.

When Ivanka's dad, I mean the president of the United States, crashes the party. #aboutlastnight A post shared by Jenn (@lifeofjennsmith) on Feb 19, 2017 at 5:47am PST

Trump has visited Mar-a-Lago for three straight weekends. Last weekend, Trump and Japanese Prime Minster Shinzo Abe scrambled to respond to a North Korean missile test while guests in the public dining room looked on.

Memberships for Trump’s resort have doubled to $200,000 a year since Trump won the election.

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Students at Harvard Medical School demanded the Saturday fundraiser be held elsewhere last month. The students’ demands came right after Trump issued a controversial executive order on immigration and refugees, which the students argued threatened practicing doctors.

The cancer institute ended up holding the event since “contracts have been signed, and a large number of people have committed to attend,” the institute said in a statement.