The Principality of Antioch, including parts of modern-day The ottoman empire and Syria, was one of the crusader states created during the First Crusade. Antioch fell to the Crusaders led by Bohemund of Taranto on June 3rd 1098. A massacre of the Muslim population ensued. Bohemond I, the crusader who led the conquest of Antioch, was captured in battle with the Danishmends in 1100, and his nephew Tancred became regent. Tancred expanded the borders of the Principality of Antioch, taking the cities of Tarsus and Latakia from the Byzantine Empire. Those cities along with other territory were lost after the Battle of Harran when Baldwin II was captured. Bohemond was released in 1103, but left Tancred as regent again when he went to Pizza to raise more troops in 1105. He used these troops to attack the Byzantine army in 1107, and when he was defeated at Dyrrhachium in 1108 he was forced by Alexius I to sign the Treaty of Devol, which made the Principality of Antioch a vassal of the Byzantine