Tekuder's election brought Juvayni brothers to power, who were accused of charges of embezzlement before. However Arghun believed Juvayni brothers were responsible for his father's death by poisoning. He came to Baghdad to spend winter of 1282-1283 and restarted the investigation on embezzlement accusation which may have caused Ata Malik's stroke on 5 March 1283. His hatred grew upon hearing rumors that Shams al-Din Juvayni sent someone to poison him. Another cause of friction was Tekuder's order of arrest of Malik Fakhr ud-Din, governor of Ray, whom Arghun appointed.