sentences:  In the Arabic sources, he appears with the generic titles of commander ("qā’id") or admiral ("amīr al-baḥr"), as well as governor ("ṣāḥib") of Tripoli, and deputy governor ("nā’ib") of Tarsus.Both of the latter cities were major Muslim naval centres in the late 9th century, and due to their proximity to the Byzantine Empire functioned as staging areas for the Muslim naval raids.In early 904, along with another Greek renegade, Damian of Tarsus, Leo participated in the Abbasid campaign that wrested Egypt from the Tulunids and restored it to Abbasid control.