 By 670, the "Viennese chronicle" records that in 677, the "Ungri" (Onogur Bulgar) ethnicon was established decisively in Pannonia.Following Khan Kubrat's death or a few years later in the time of Bezmer, the empire was dissolved into 5 branches.Two of them (led by Batbayan and Kotrag) were subdued by the emerging Khazar Empire, while the fourth one led by Asparukh established the Danube Bulgar Empire and stabilized it by the victory at the battle of Ongal.