In court in Germany, Johann Rehbogen is charged with being an accessory in the murders of several hundred Jewish and Polish prisoners at the Stutthof concentration camp in the early 1940s.
Merkel announced that she will step down from leading the Christian Democratic Union after her party struggled in a regional election. Her current term as chancellor runs into 2021.
The 54-year-old got more than a dozen years after confessing to poisoning baby food with an antifreeze ingredient, putting the jars on store shelves and then trying to extort money from supermarkets.
Fellow Jews in the country are baffled by a small Jewish faction within the Alternative for Germany, a party accused of racism and of downplaying the Nazis.
Organizers expected 40,000 people to show up at their march Saturday. Instead, they say, more than 240,000 attended. The event comes at a time when far-right populists are gaining ground in Germany.
A booming economy and ever fewer migrants crossing the border haven't eased a populist backlash against the German chancellor's political allies in the wealthy alpine state of Bavaria.
The man was arrested for failing to pay a fine for theft, but police officers did not thoroughly check his identity. The 26-year-old died of injuries after a fire broke out in the jail.