In 1068 Romanos IV Diogenes took power, and after some speedy military reforms entrusted Manuel Komnenos (nephew of Isaac I Komnenos) to lead an expedition against the Seljuks. Manuel captured Hierapolis Bambyce in Syria, next thwarted a Turkish attack against Iconium with a counter-attack, but was then defeated and captured by the Seljuks under the sultan Alp Arslan. Despite his success Alp Arslan was quick to seek a peace treaty with the Byzantines, signed in 1069; he saw the Fatimids in Egypt as his main enemy and had no desire to be diverted by unnecessary hostilities.