However, during Hormizd's stay at Ctesiphon, he was overthrown in a seemingly bloodless palace revolution by his brothers-in-law Vistahm and Vinduyih, "who equally hated Hormizd".[9][10] Hormizd was shortly blinded with a red-hot needle by the two brothers, who put the latters oldest son Khosrow II (who was their nephew through his mother's side) on the throne.[11][9] The two brothers shortly had Hormizd killed with at least the implicit approval of Khosrow II.[9] Nevertheless, Bahram continued his march to Ctesiphon, now with the pretext of claiming to avenge Hormizd.[12]