The first action took place in northern Lazio, where small bands of ravagers were surprised and destroyed. The Christians scored two more significant victories at
Campo Baccano, on the
Via Cassia, and in the area of
Tivoli and
Vicovaro. After these defeats, the Muslims occupying
Narni and other strongholds moved back to the main Fatimid stronghold on the Garigliano: this was a fortified settlement (
kairuan) whose site, however, has not yet been identified with certainty. The siege lasted for three months, from June to August. After being pushed out of the fortified camp, the Fatimids retired to the nearby hills. Here they resisted many attacks led by Alberic and Landulf. However, deprived of food and noticing their situation was becoming desperate, in August they attempted a sally to reach the coast and escape to the
Emirate of Sicily. According to the chronicles, all were captured and executed. ==Aftermath==