Bahram Chobin was then defeated at the Battle of Blarathon, forcing him to flee with 4,000 men eastwards. He marched towards Nishapur, where he defeated a pursuing army as well as an army led by a Karenid nobleman at Qumis. Constantly troubled, he crossed the Oxus river, where he was received honorably by the Khagan of the Turks, who was most likely Birmudha–the same Turkic prince that Bahram Chobin had defeated and captured a few years earlier during his wars against the Turks. Bahram Chobin entered his service, and was appointed as a commander in the army, achieving further military accomplishments there. Bahram Chobin became a highly popular figure after saving the Khagan from a conspiracy instigated by the latters brother Byghu (conceivably an incorrect translation of "yabghu"). Khosrow II, however, could not feel safe as long as Bahram Chobin lived, and succeeded in having him assassinated. The assassination was reportedly achieved through distribution of presents and bribes between the members of the Turkic royal family, notably the queen. What remained of Bahram Chobin's supporters went back to northern Iran and joined the rebellion of Vistahm (590/1–596 or 594/5–600).