Meanwhile, Hormizd tried to come to terms with his brothers-in-law Vistahm and Vinduyih, who according to the Syriac writer Joshua the Stylite, both "equally hated Hormizd". The two brothers overthrew Hormizd in a seemingly bloodless palace revolution. They had Hormizd blinded with a red-hot needle, and put Khosrow II on the throne. Sometime in the summer of 590, the two brothers then had Hormizd killed, with at least the implicit approval of Khosrow II. Nevertheless, Bahram Chobin continued his march to Ctesiphon, now with the pretext of claiming to avenge Hormizd.