Ahmad acted first, advancing from Ardabil to Tabriz and ordered Hussain's execution.
One of Hussain's amirs, 'Adil Aqa, opposed Ahmad and had Bayazid proclaimed as sultan in Soltaniyeh.
In order to secure his position, Ahmad requested the assistance of the Black Sheep Turkmen; they killed Shaikh 'Ali in battle.
At this point, Shah Shuja of the Muzaffarids of Iran intervened, and a new peace was brokered.
'Adil Aqa's departure left Bayazid without his principal ally, however, and in the spring of 1384 he gave up Soltaniyeh to Ahmad.