 Hungarians murdered Kuthen and the Cumans returned to the Balkans in 1241, pillaging Syrmia as an act of revenge.Following the Mongol invasion of Hungary in 1246, Béla re-invited Cumans and smaller group of Jazyges (an Ossetian tribe) back to Hungary, to settle in devastated areas of the Great Hungarian Plain.The migration reportedly involved some 40,000–70,000 Cumans, divided into 7 tribes