leader passed away and was succeeded by Henry I, brother of King Otto I. For this reason, the Hungarians have attacked Bavaria, says Aventinus, however they weren't able to penetrate deep into East Francia. In the following years, the Germans started to threaten Transdanubia, with border fights erupting at the Enns river. According to Hrotsvitha, Henry brought back lots of booty and prisoners from the Avars (Hungarians). In 952, Otto put even Italy under the protection of the Bavarian army, and westward invasions of the Magyars discontinued for a short time. The next year saw an internal war breaking out in Francia under the leadership of the king's son Liudolf, Duke of Swabia, and son-in-law Conrad, Duke of Lorraine, mainly because of the occupation of Italy. In 954, the brothers called in the Hungarians, who arriving in the Rhineland, upset the territory. According to a chronicler, they devastated France miserably. The warriors returned from the successful adventure safely through Burgundy and Northern Italy. The year 955 started badly for King Otto. Despite his best efforts, the archbishop of Salzburg joined the enemy. Harold was blinded and exiled to Tyrol, while his wealth was taken by Henry's vassals, upsetting many more Bavarian counts, who took up arms against the king. In spite of the growing of the resistance, Otto gained a shining victory at Mühldorf, proceeding to siege Regensburg. Much of the city had already burned down, however its folk withstanded against Otto's siege machines for long before giving up in their hunger, as no external help arrived. The internal situation hardly improved after the defeat of the rebellion, as the nephews of Prince Hermann of Saxony frequently raided the duchy, allying with Polabian principalities. In early July Otto received Hungarian legates, who claimed to come in peace, but who the Germans suspected were actually assessing the outcome of the rebellion. After a few days, he let them go with some small gifts. Soon, couriers from Otto I's brother Henry I, Duke of Bavaria, arrived to inform Otto I in Magdeburg of a Hungarian invasion. According to Ulrich, "they devastated the land of Noricum from the Danube to the Black Forest, which goes to the mountainous regions". According to Widukind, "he (Otto) started the march against the enemy like he wouldn't get tired in the previous war, only taking some of the Saxons by him, as the Slavic war threatened them".