The blast happened at the first rally that Prime Minister Abiy Ahmed had called in the capital Addis Ababa. It was not immediately known who was behind the attack, but police have reportedly arrested six people in connection with the attack.
US Secretary of State Rex Tillerson and Russian Foreign Minister Sergei Lavrov, who are touring Africa, couldn't meet during their stay in Ethiopia's capital Addis Ababa. Both countries are trading accusations about who's to blame.