When word reached Paskevich he abandoned any plans to move south and returned to Echmiadzin (5 September). Moving east he captured the fort of Serdar-Abad and on 23 September appeared before the walls of Yerevan. Much of the siege work was directed by , a former engineer officer who had been reduced to the ranks for involvement with the Decembrists. When the place fell he was promoted to non-commissioned officer. Yerevan fell on 2 October. 4000 prisoners and 49 guns were taken and the Yerevan Khanate became a Russian province.