Acropolis remained in the hands of the Byzantines until 882, when the town fell to the Saracens, who turned it into a formidable stronghold (). From this base, they set out to plunder and terrorise the surrounding areas, right up to the walls of Salerno. Eventually, in 915, they were driven out from their trenched camp at Garigliano. Acropolis was also liberated, and came back under the jurisdiction of the bishops, who had established their see in (old) Capaccio during this period.