 He was, however, shortly murdered by the nobles and priests, who elected a son of Bahram IV, Khosrow, as shah.Bahram was informed about the news of Yazdegerd I's death when he was in the Arabian Desert—he opposed the decision of the nobles, and asked al-Mundhir I ibn al-Nu'man (who had succeeded his father al-Nu'man I) for military assistance, who agreed to help him.Bahram and al-Mundhir I, at the head of an army of numerous soldiers, marched towards Ctesiphon, where Bahram promised that he would not reign like his father Yazdegerd I did.