LONDON (JTA) – Graffiti featuring a Star of David and “9 11” was painted on buildings on several streets in North London.

The graffiti, discovered on a synagogue and store windows in Hampstead and Belsize Park on Sunday morning, seems to refer to a conspiracy theory that Jewish people were responsible for the attack on the two towers of the World Trade Center in New York in 2001.

The neighborhoods in which the graffiti was painted are home to large Jewish populations. One of the buildings vandalized was formerly an Israeli-style restaurant.

“This is a reminder that anti-Semitism is still with us,” the Board of Deputies of British Jews tweeted.