Emirate of Sicily conquer Castrogiovanni (the modern Enna, where Euphemius died) and retreated back to Mazara. In 830 they received a strong reinforcement of 30,000 Ifriqiyan and Andalusian troops. The Iberian Muslims defeated the Byzantine commander Teodotus in July–August of that year, but again a plague forced them to return to Mazara and then to Ifriqiya. The Ifriqiyan units sent to besiege Palermo managed to capture it after a year long siege in September 831. Palermo became the Muslim capital of Sicily, renamed al-Madinah ("The City"). The conquest was a see-saw affair; with considerable resistance and many internal struggles, it took over a
Euphemius (Sicily) While he was away, however, the Emperor Michael II the Amorian sent a letter ordering his demotion and punishment. Euphemius learned of this while returning to Sicily with his fleet. Euphemios, supported by the fleet, thereupon resolved to revolt. He was proclaimed by the fleet crews as emperor, and sailed for the capital of Sicily, Syracuse, which was quickly captured. The "patrikios" Constantine was either absent from the city or fled inland at his approach, but soon gathered an army and attacked him. Euphemius won, and forced the governor to seek refuge in Catana. When Euphemius sent his forces against