Pro-Palestinian protesters took over parts of the Brooklyn Museum on Friday, hanging a banner above the main entrance, occupying much of the lobby and scuffling with police, witnesses said, Reuters reports.

The art museum in the New York City borough of Brooklyn said it closed an hour early because of the disruption, including skirmishes between police and protesters that took place inside and outside the building.

Some arrests were made but a New York Police Department spokesperson said there would be no official count until after the protest concluded. A demonstration continued outside the museum hours after the initial confrontation, but the spokesperson could not say whether any protesters remained inside.

One of the arrests was of a man who defaced an outdoor sculpture with graffiti, a Reuters witness said. Several protesters scrawled messages on the OY/YO sculpture on the plaza outside the entrance.

“There was damage to existing and newly installed artwork on our plaza,” a museum spokesperson said in an email. “Protesters entered the building, and our public safety staff were physically and verbally harassed.

“Out of a concern for the building, our collections, and our staff, the decision was made to close the building an hour early,” and the public was asked to vacate peacefully, the statement said.

Hundreds of demonstrators were marching through Brooklyn when some of them rushed the entrance, according to the Reuters witness. Security guards prevented many from entering but some managed to get inside.

A banner was hung from atop the neoclassical facade proclaiming, “Free Palestine, Divest From Genocide.” A pro-Palestinian organization named Within Our Lifetime urged demonstrators to “flood Brooklyn Museum for Gaza.”

It said activists occupied the museum to compel it to disclose any Israel-related investments and to divest any such funding.