The United States, Germany, France and other G7 countries called on Friday for an independent and transparent investigation into alleged human rights abuses during the conflict in Ethiopia's northern Tigray region.
Ethiopia's federal army ousted the former regional ruling party, the Tigray People's Liberation Front (TPLF), from the capital Mekelle in November.
Thousands of people died, hundreds of thousands have been forced from their homes and there are shortages of food, water and medicine in the region. The government says most fighting has ceased but there are still isolated incidents of shooting.
Ethiopian Prime Minister Abiy Ahmed said last week Eritrea has agreed to withdraw troops it had sent during the fighting into Ethiopian territory along their mutual border, amid mounting reports of human rights abuses. Eritrea has denied its forces joined the conflict.
The G7 foreign ministers of Canada, France, Germany, Italy, Japan, the United Kingdom and the United States and EU foreign policy chief Josep Borrell expressed their concerns in a joint statement.
"All parties must exercise utmost restraint, ensure the protection of civilians and respect human rights and international law," they said.
"It is essential that there is an independent, transparent and impartial investigation into the crimes reported and that those responsible for these human rights abuses are held to account," the ministers said.
They said the withdrawal of Eritrean forces from Tigray must be swift, unconditional and verifiable and that a political process acceptable to all Ethiopians should be set up that leads to credible elections and a national reconciliation process.
Ethiopia's foreign ministry said in March it was ready to work with international human rights experts to conduct investigations on allegations of abuses.