While Berengar and his armies were at war in Southern Tyrol, Count Lothar was surrounded by his enemies. At the moment Lothar and his armies were sandwiched in between Count Otto's forces who besieged the city, and the Castle's garrison who valiantly continued to defend the Castle's walls against Lothar's onslaught.
Worse yet, right before he was trapped within the confines of the city, he was informed that his army that was sent to Kufstein had been completely obliterated. Though, he did not know the extent to which Berengar had put down his rebellion within his home territory, for if he did, the man would truly lose all hope of survival.