Wladyslaw Bartoszewski, a former Polish Auschwitz prisoner and member of the underground wartime resistance who helped save Jews and later served twice as the country's foreign minister, has died. He was 93.

Several government officials reported that Bartoszewski died Friday in Warsaw, including President Bronislaw Komorowski who wrote on Twitter that he was deeply saddened.

"This is a huge loss; a great Pole has left us," Komorowski wrote.

Bartoszewski was widely respected for his humanity and wisdom. He distinguished himself not only with this wartime resistance, but also as a writer, a social activist and as a politician. A man who suffered at the hands of the Germans during the war, Bartoszewski more recently worked to improve Polish-German ties.