The Battle of Alexandretta was the first clash between the forces of the Byzantine Empire and the Fatimid Caliphate in Syria. It was fought in early 971 near Alexandretta, while the main Fatimid army was besieging Antioch, which the Byzantines had captured two years previously. The Byzantines, led by one of Emperor John I Tzimiskes' household eunuchs, lured a 4,000-strong Fatimid detachment to attack their empty encampment and then attacked them from all sides, destroying the Fatimid force. The defeat at Alexandretta, coupled with the Qarmatian invasion of southern Syria, forced the Fatimids to lift the siege and secured Byzantine control of Antioch and northern Syria.