The windows of a synagogue in Brooklyn were broken during Rosh Hashanah services, JTA reported Wednesday.

A video showing people throwing milk crates at the Rivnitz synagogue in the Williamsburg neighborhood was circulated Wednesday on social media.

Police said that the incident took place on Monday afternoon and they were searching for two females who were seen in the video, according to a report on WPIX-TV.

New York City Mayor Bill de Blasio condemned the vandalism, saying, “This is a shocking act of hate. We WILL find the perpetrators and hold them responsible.”

The Anti-Defamation League said it was “deeply disturbed” by the video.

“At a time when the Brooklyn Jewish community is already on edge in the wake of a series of anti-Semitic incidents, it is extremely upsetting to see this congregation targeted during what is otherwise supposed to be a joyous celebration of the Jewish New Year,” Evan Bernstein, the regional director of the organization’s New York-New Jersey office, said in a statement quoted by JTA.

The incident follows a spate of attacks against visibly Orthodox Jewish men in Brooklyn.

Last month, a hasidic man was assaulted by several African-American youths in Williamsburg. The incident was recorded by security cameras.

Last week, anti-Semitic graffiti was found inside a Westchester County high school for the second time in one month.

New York Governor Andrew Cuomo said he is directing the State Police Hate Crimes Task Force to assist school officials and local law enforcement in their investigation.

Two weeks ago, Cuomo ordered the NY State Police Hate Crimes Task Force to investigate after swastikas were found carved into a bathroom door at a Starbucks location in Nyack, located near Monsey in Rockland County.