Sopot was an important stronghold and the Greek groups that participated in Mormoris' operations included Greek "stratioti" from Corfu and Greeks from Himarra (called "Himariotes"). After a successful siege on 7 June 1570, Mormoris was made commander of the fortress and the surrounding region. The capture of Sopot caused a revolt under his leadership resulting in the Ottomans being limited in the region to some military outposts. Mormoris, together with groups of Himariotes, then tried to destroy the Ottoman army as soon as possible. Afterwards, the anti-Ottoman movement spread to the regions of Argyrokastron, Delvina and Parga with the military help of the local Greek nobility and some "stratioti", such as Petros Lantzas and Georgios Renesis. Also, the people of Himara supported the rebellion and willingly surrendered to Venetian rule, while making use of the mountains of their homeland.