The NYPD has launched an investigation after the homes of Brooklyn Museum director, Anne Pasternak, and members of the museum's board of trustees were targeted by pro-Palestinian vandals on Tuesday night. All of them are Jewish.

Vandals desecrated their homes in red paint and left threatening signs. Red upside-down arrows were painted across the outside of Pasternak's home, which was the symbol used by the Hamas terror group during its Oct. 7 massacre of 1,200 Israeli civilians. Buildings associated with the museum and the United Nations were also targeted, per the AP.

NYC Mayor Eric Adams called out the "unacceptable" act of "antisemitism" on X and vowed to bring the perpetrators to justice.

"This is not peaceful protest or free speech. This is a crime, and it's overt, unacceptable antisemitism. These actions will never be tolerated in New York City for any reason," wrote Adams.

"I'm sorry to Anne Pasternak and members of Brooklyn Museum's board who woke up to hatred like this," he continued. "I spoke to Anne this morning and committed that this hate will not stand in our city. The NYPD is investigating and will bring criminals responsible here to justice."

The sign left outside of Pasternak's home called her a "white supremacist Zionist" and accused her of "funding genocide." Her large white columns, pristine brick walls, and shiny glass windows were left splattered in dripping red paint.

Additionally, the phrase "Blood on your hands" was written on the ground nearby the sign, as photographed by the New York Post.

Taylor Maatman, a spokesperson for the museum, said a police report has been filed but did not get into details. Maatman told AP in an emailed statement: "We are deeply troubled by these horrible acts of vandalism targeting museum leadership."

Red paint was also splattered on buildings connected to the German consulate and the Permanent Observer Mission of the State of Palestine to the United Nations, authorities said.

This comes after hundreds of anti-Israel demonstrators marched on the Brooklyn Museum last month, where they set up tents in the lobby and unfurled a large banner from the roof that read, "Free Palestine." Police responded and made dozens of arrests.