Shapur I then reconquered Armenia, and incited Anak the Parthian to murder the king of Armenia, Khosrov II. Anak did as Shapur asked, and had Khosrov murdered in 258; yet Anak himself was shortly thereafter murdered by Armenian nobles. Shapur then appointed his son Hormizd I as the "Great King of Armenia". With Armenia subjugated, Georgia submitted to the Sasanian Empire and fell under the supervision of a Sasanian official. With Georgia and Armenia under control, the Sasanians' borders on the north were thus secured.