The Latins captured and publicly executed AlexiosV in Constantinople. They also arrested AlexiosIV in Thessaly, forcing him to cede the imperial insignia to them early in 1205. A grandson of Emperor Manuel I Komnenos (), Manuel Maurozomes, and Maurozomes's son-in-law, the deposed Sultan of Rum, Ghiyāth al-Dīn Kaykhusraw I, came to Nicaea. Theodore detained them, but he soon concluded an agreement with them. He lent money to Kaykhusraw to regain his throne in return for his promise of military support. Kaykhusraw and Maurozomes hurried to Konya, the capital of Rum. They dethroned the underage Kilij Arslan in Kaykhusraw's favor in March 1205.