Several white swastikas were spray-painted on blue picnic tables at Dunney Park overnight and discovered early Wednesday morning in Clifton, New Jersey.

It was one of several antisemitic incidents reported in the city of 90,000 in recent weeks, officials said.

The spray-painted symbols were found on the picnic tables and the door of a portable toilet, said City Manager Nick Villano.

In recent weeks, antisemitic incidents were also reported at the Allwood Road Park & Ride and at Jubilee Park. In both locations, chalk messages were found on walls directing people to a web address that lead to an anti-Israel website and other hateful messages.

Villano informed NJ Transit officials about the cleanup and said the State Police investigated. Calls made to the prosecutor's office were not immediately returned.

City and police officials said of the recent issues, the Dunney Park graffiti is the most concerning. The park is located near Mesivta of Clifton, a high school for Jewish students.

Local resident and former candidate for the city's council Stephen Goldberg called the incidents disgusting,

"We need to get serious about addressing antisemitism," Goldberg said, adding the city should adopt the antisemitic standards of the International Holocaust Remembrance Alliance.