When Gaykhatu came to Anatolia with his army, Kilij Arslan moved to Yavlak Arslan's capital, Kastamonu, and organized the Turkmens there. Muzaffer al-Din Yavlak Arslan's side in this rebellion is mixed. Although he wrote that he opposed Mesud and Kilij Arslan organised the Turkmen in Kastamonu,[1][2][3] some sources wrote that Muzaffereddin Yavlak Arslan opposed Kılıçarslan and was killed by him.[4][5][dead link]