0613 GMT April 22, 2021
The chairman of the winning party becomes prime minister, Reuters wrote.
Ethiopia has a federal system comprising 10 regions with freedom to set some taxes, run security forces and pass laws.
Prime Minister Abiy Ahmed is facing outbreaks of deadly violence in several regions, including a conflict in the northern Tigray region, where thousands of people are believed to have died since fighting began on November 4.
Ethiopia’s previous government, which had ruled in an increasingly autocratic fashion until Abiy took power in 2018, was dominated by an ethnically-based party from Tigray.
Also, on Thursday, the military killed 42 armed men accused of taking part in a massacre in the western Benishangul-Gumuz region.
Ahmed said he was sending forces to Benishangul-Gumuz, which borders Sudan, the day after unidentified attackers torched homes and killed more than 100 people in a village there.
The region is home to several ethnic groups.
Ethiopia is also experiencing unrest in the Oromia region and faces long-running security threats from Somali fighters along its porous eastern border.