Two swastikas were discovered over the weekend painted on a monument commemorating the murder of thousands of Jews in the central Polish town of Otwock.
The defaced stone, which contains inscriptions in Hebrew and Polish, was discovered on Saturday morning, the Polish newspaper Wyborcza reported.
It marks the spot of a mass grave containing an estimated 2,400 Jews executed between August and September 1942.
Police told the newspaper that an investigation was underway.
After the outbreak of the Second World War Otwock became the location of a Jewish ghetto in which more than 10,000 Jews were assembled.
The town commemorates the breakup of the ghetto, during which residents were transported to Auschwitz and Treblinka, with a ceremony every August 19.
“Here, in the mass grave, some 2,400 Jews from Otwock who were murdered in this place by the German occupiers are buried in August 1942,” the plaque on the stone reads, according to the Israel-based Coordination Forum for Countering Antisemitism.
“We will remember their tragedy and all the Jewish citizens murdered in our town.”
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