Why is Ugarte fleeing from the Germans in the movie casablanca?

In the movie "Casablanca," Ugarte is fleeing from the Germans because he possesses stolen letters of transit that allow individuals to escape occupied Europe. These letters are highly sought after, and Ugarte knows they can secure safe passage out of Casablanca. His predicament highlights the dangers faced by those trying to escape the oppressive regime and the moral complexities of wartime choices. Ultimately, his flight leads to his capture by the authorities, setting off a chain of events that affects the main characters in the film.