The world's most wanted living Nazi collaborator is Laszlo Csatary, the Simon Wiesenthal Center said in its annual report on Thursday.
Csatary was the police chief of Kosice during the deportation of 15,700 local Jews to Auschwitz in spring 1944, the Jewish group said.
After the war he emigrated to Canada but was stripped of his citizenship in 1995 when his wartime role was discovered and subsequently left the country.
Efraim Zuroff, the SWC's Israel director, said Csatary resurfaced in Hungary earlier this year and that he hoped local authorities would prosecute him promptly.
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