As Vistahm began to threaten Media, Khosrow sent several armies against his uncle, but failed to achieve a decisive result: Vistahm and his followers retreated to the mountainous region of Gilan, while several Armenian contingents of the royal army rebelled and defected to Vistahm. Finally, Khosrow called upon the services of the Armenian Smbat Bagratuni, who engaged Vistahm near Qumis. During the battle, Vistahm was murdered by Pariowk at Khosrow's urging (or, according to an alternative account, by his wife Gordiya). Nevertheless, Vistahm's troops managed to repel the royal army at Qumis, and it required another expedition by Smbat in the next year to finally end the rebellion.