Hamdok, who was accompanied by Sudanese security officials, planned to present his concerns about threats to Sudan’s security along its border with Tigray during the visit, the officials said. However, Hamdok returned within a few hours from what Ethiopian Prime Minister Abiy Ahmed had earlier described as a two-day trip.

Fighting erupted on Nov. 4 between Ethiopia’s government and the then-governing party in Tigray, the Tigray People’s Liberation Front (TPLF). Thousands of people are believed to have been killed and more than 950,000 displaced, some 50,000 of them into Sudan, according to U.N. estimates.