Kazimierz Smolen, a 91-year-old Auschwitz survivor who after World War II became director of the memorial site, died Friday on the 67th anniversary of its liberation.

Smolen died in a hospital in Oswiecim, the southern Polish town where Nazi Germany operated Auschwitz-Birkenau during World War II, said Pawel Sawicki, a spokesman for the Auschwitz-Birkenau state museum.

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