The attorney general for Ethiopia’s northern Amhara state, Migbara Kebede, has died from his injuries following Saturday’s gun attack in the regional capital, Bahir Dar, state-run media reports.
The federal government described the attack as a coup attempt as people tried to overthrow the state government.
It had been reported that Mr Migbara had been injured while the governor of Amhara, Ambachew Mekonnen, and his senior adviser, Ezez Wasie were killed when gunmen entered an office where the men were.
Hours later the chief of staff of the army, Gen Seare Mekonnen, was shot dead by his own bodyguard in the capital, Addis Ababa.
He and another officer, Gen Gezai Abera, died trying to prevent the coup attempt, Prime Minister Abiy Ahmed said.
Ethiopians are observing a day of mourning.