The Reimann family — whose JAB Holding Co. owns the chains Panera Bread and Krispy Kreme Doughnuts as well as a host of other brands — used Russian civilians and French prisoners of war as forced labor for their businesses and private villas in the Nazi era, according to a German newspaper report.

They donated to Nazi organizations as early as 1931, and Albert Reimann Jr., the primary source of his descendants’ multibillion-dollar fortune, once complained about the French prisoners’ work rate, Bild am Sonntag reported Sunday.

After discovering the extent of their ancestors’ Nazi ties, the Reimanns pledged 10 million euros ($11 million) to a charity, though they didn’t say who would receive the money.

The decision was “spontaneous, because the family was absolutely ashamed,” the spokeswoman said.

Read more at Bloomberg.