A memorial in Romania to six Israeli airmen and one Romanian who died in a training accident in 2010 was defaced in recent days.

The words “You are pigs,” swastikas and a pig were painted on the memorial’s stone face, according to the Ynet news site.

The site commemorates those who died in a July 26, 2010 crash of an Israeli Air Force chopper during a joint Israeli-Romanian training exercise in the Carpathian mountains. The crew aboard the Yas’ur (CH-53 Sea Stallion) helicopter included six Israelis and one Romanian air force officer.

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The memorial, near the small town of Brasov in the center of the country, lies far from major population centers.

Romanian police launched an investigation after Israel’s ambassador to Bucharest, Tamar Samash, alerted the Israeli police attache in the country to reports of the vandalism.

Samash also wrote to Romania’s president, prime minister and foreign minister protesting the incident.

The memorial was erected in 2011.