The Ottoman Interregnum, or Ottoman Civil War, was a civil war in the Ottoman realm between the sons of the Ottoman sultan Bayezid I following their father's defeat and capture by Timur in the Battle of Ankara on 28 July 1402. Although Timur confirmed Mehmed Çelebi as sultan, Mehmed's brothers refused to recognize his authority, each claiming the throne for himself, which resulted in civil war. The Interregnum would last a little under 11 years and culminate in the Battle of Çamurlu on 5 July 1413, when Mehmed Çelebi emerged as victor, crowned himself Sultan Mehmed I, and restored the empire.