Police in Palm Beach County, Florida are investigating after a swastika was spray-painted on the side of a building in a predominantly Jewish gated retirement community in Boca Raton.

The antisemitic graffiti was found on the side of Fanshaw J building in Century Village. Residents told WPTV the space is a public area containing a directory and mailboxes.

According to the Palm Beach County Sheriff’s Office (PBSO), there are no surveillance cameras in the area. There are also no witnesses who have come forward.

PBSO said that on Friday night, someone scrawled the swastika on the glass that covers the directory listing residents in the complex. The vandal also drew an arrow that pointed to the listing for the homeowner association (HOA) president, CBS12 reported.

In response, Boca Raton Police are increasing patrols at synagogues and other religious sites in the city.

Century Village has a large and growing Orthodox population, with many newcomers in the last decade from other states. The community has two synagogues on its grounds.