The development came as a senior Amhara official says the rebels, known as the Tigray People's Liberation Front, were pushing "deep" into Amhara territory and hinted at possible retaliation.
UN's humanitarian chief Martin Griffiths condemns "dangerous" accusations by Ethiopia that aid workers were biased in favour of and even arming rebel forces in war-hit Tigray.
Some 5,000 Ethiopian refugees are expected to cross into Sudan in the coming days, a Sudanese official says, as world marks 70th anniversary of 1951 Refugee Convention amid worsening refugee crisis.
Sudanese government report says 3,000 asylum-seekers hail from Ethiopia's restive Amhara region, which borders conflict-hit Tigray state.
Thousands of Eritrean refugees in Ethiopia have endured mass rights violations amidst the Tigray war and an information blackout. Here is my humble attempt to shed light on what happened during a terrifying three months of abuse.
At least 20 civilians have been killed and some 70,000 displaced as rebel forces from Ethiopia's northern Tigray region mount attacks on neighbouring Afar region, Ethiopian officials say.
The Grand Ethiopian Renaissance Dam has been at the centre of a regional dispute ever since Ethiopia broke ground on the project in 2011.
Spokesman for Tigray People's Liberation Front says they carried out operations against special forces and militia fighters from Oromia region, Ethiopia's largest, who were massing along the Tigray-Afar border.
Ethiopia's Tigray forces free 1,000 captured soldiers
Leader of the Tigray People's Liberation Front says the group still has 5,000 and that it will keep senior officers "who will face trial".
Amnesty says total number of Tigrayans arrested by Ethiopian authorities is likely to be in the hundreds, with the whereabouts of many unknown.
Tigray forces have seized Alamata, southern Tigray's main town, and advanced to region's west where fertile farmlands have long been contested.
Tigrayan rebel forces have launched a new offensive in the conflict-torn northern region of Ethiopia and claim to have seized a major town there.
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