In the summer of 533 Vandal forces (5,000 men and 120 ships), led by Tzazo, arrived in Sardinia to stifle Godas' rebellion and conquered Caralis, killing Godas and his followers. In early 534, the Vandals of Sardinia surrendered immediately to the Byzantines when faced with news of the Vandal collapse in Africa; thenceforth the island was part of the Byzantine Empire, included as a province in the Praetorian prefecture of Africa. The local governor sat in Caralis. During the Gothic Wars, much of the island fell easily to the Ostrogoths, but the final fall of the Germanic resistance in mainland Italy reassured Byzantine control. Sardinia was subsequently included in the Exarchate of Africa until its end by the Arabs in 698 AD, when the island was likely aggregated to the Exarchate of Ravenna. In 599 and during the 7th century, the Longobard fleet tried to attack Caralis and Turris Libissonis (Porto Torres), but in vain.