 There was allegedly a plot involving him by Manuel II Palaiologos, who tried to use Orhan against Sultan Mehmed; however, the sultan found out about the plot and had Orhan blinded for betrayal, according to a common Byzantine practice.Furthermore, as a result of the Battle of Ankara and other civil wars, the population of the empire had become unstable and traumatized.A very powerful social and religious movement arose in the empire and became disruptive.