(JTA) — A Conservative synagogue in northeast Philadelphia was targeted with anti-Semitic vandalism.

Members of the Congregations of Ner Zedek discovered two large swastikas spray painted on the synagogue building on Monday when they arrived for daily morning prayers, according to the Jewish Exponent.

In recent weeks a rock was thrown through a glass panel on a synagogue door, the newspaper reported. Swastikas also were spray painted on the building a few years ago.

A city clean-up crew washed away the offending images later on Monday.

Three newly installed surveillance cameras captured 14 hours of footage, around the time of the vandalism, according to the news website philly.com.

“As we know, unfortunately, in the world we live in, although we all want to try and get along with each other, it doesn’t always happen that way,” said Rabbi Reuben Israel Abraham told myfoxphilly.com. “I have a number of Holocaust survivors here in my congregation, and if they see something like this. Of course it brings back all sorts of terrible memories of what they went through.”