Géza tried to persuade Soběslav II of Bohemia to help him meet Frederick I, Holy Roman Emperor, but Soběslav seized Géza and handed him over to Béla in 1177. Béla once again imprisoned his brother, and he also put their mother, Euphrosyne, in confinement. In retaliation for Soběslav's role in Géza's capture, Emperor Frederick dethroned Soběslav and appointed another member of the Přemyslid dynasty, Frederick, to the position of duke. The Holy Roman Emperor ordered the new Duke of Austria, Leopold V, to storm Bohemia. Béla soon intervened, threatening Leopold V with an invasion, which forced Leopold to leave Bohemia.
