 According to Procopius, Agathias and Menander, the Kutrigurs and Utigurs decimated one another, until they lost even their tribal names.Some Kutrigur remnants were swept away by the Avars to Pannonia, while the Utigurs remained in the Pontic steppe and fell under the rule of the Türks.Their last mention was by Menander Protector, who recorded among the Türk forces that attacked Bosporos in 576 an Utigur army led by chieftain Ανάγαιος (Anagai, Anağay).