of his primary lieutenants. Pandulf's lands were partitioned among his sons, though further quarrels between the local Lombard princes soon followed. Pandulf's older son Landulf IV received Capua and Benevento while his younger son Pandulf II received Salerno. Upon hearing of Pandulf's death, Otto II, ruling from Rome, traveled south to install Thrasimund IV as Duke of Spoleto. Then, Pandulf's nephew Pandulf II was given Benevento when Otto II partitioned Landulf IV's territory, with Landulf IV keeping Capua. Finally, Duke Manso I of Amalfi deposed Pandulf II of Salerno in 982. By 982 the entire area once ruled by Pandulf had collapsed, weakening Otto II's position against the Byzantines. The Byzantines still claimed sovereignty over the Lombard principalities, and the lack of a single leader to prevent their advances into Lombard territory allowed the Byzantines to make inroads further north. Otto II attempted on several occasions to reunify the Lombard principalities politically and ecclesiastically into his Empire after Pandulf's death. Though he unsuccessfully besieged Manso I in Salerno, Otto II ultimately obtained the recognition of his authority from all the Lombard principalities. With his authority reestablished over the Lombard princes, Otto II turned his attention towards the threat from Muslim Sicily. Since the 960s the island had been under Muslim rule as the Emirate of Sicily, a state of the Fatimid Caliphate. The ruling Kalbid dynasty had conducted raids against Imperial territories in southern Italy. The death of Pandulf in 981 allowed the Sicilian Emir Abu al-Qasim to increase his raids, hitting targets in Apulia and Calabria. As early as 980 Otto II demanded a fleet from the city of Pisa to help him carry out his war in southern Italy, and in September 981 he marched into southern Italy. Needing allies in his campaign against the Muslims and the Byzantine Empire, Otto II reconciled with Amalfian Duke Manso I, granting Imperial recognition of his rule over Salerno. Otto II's troops marched on Byzantine-controlled Apulia in January 982 with the purpose of annexing the territory into his Empire. Otto II's march caused the Byzantine Empire to seek an alliance with Muslim Sicily in order to hold on to its southern Italian possessions. Otto's army besieged and captured the Byzantine city of Taranto, the administrative center of Apulia, in March 982. After celebrating Easter in Taranto, Otto II moved his army westward, defeating a Muslim army in early July. Emir Abu