Kassa was victorious, and Goshu Zewde of Mota, Gojjam, the commander of the regent's forces, was killed.
Ras Ali dispatched a large army to Agawmeder after his rebellious vassal, and Kassa responded by moving to a fortified position near Dengel Ber.
Ras Ali's officers found Kassa's position too strong to attack, so they bypassed it by moving to Dembiya, where they waited out the rainy season.
Ras Ali then decided to give the job of destroying Kassa to another of his vassals, Goshu Zewde, and announced at the start of September he had given Kassa's lands to Goshu, Sven Rubenson noting that "Ali probably did not care whether his overt enemy or his ally would be destroyed.
Amazed that Kassa would make what appeared to be an obvious mistake, Goshu's men immediately charged, and after a full day's combat, in which both sides suffered heavily, Kassa killed his opposing general and completely routed his opponent's men, who fled back to Gojjam.