The Simon Wiesenthal Center has launched a new initiative in Germany to prosecute Nazi war criminals who are still alive in attempt to set a major legal precedent. The center’s top Nazi hunter, Efraim Zuroff, said they would offer a reward of 25,000 euros (more than $32,000) for any information that would lead to capturing and prosecuting criminals who remain at large. The effort comes after German prosecutors successfully convicted former Ohio autoworker John Demjanjuk, 91, who served as a guard at a Nazi death camp. Roughly 4,000 people were either guards at four Nazi camps or members of death squads who went on mass killing rampages early in the war. Zuroff estimated that 80 or more people—the youngest of whom would be in their 80s—could still be alive.