The document, seen by Reuters, said Eritrean troops had deployed to the already heavily militarised and contested western part of Tigray and “taken up defensive positions with tanks and artillery” around the towns of Adi Goshu and Humera.
It also said that Ethiopian Prime Minister Abiy Ahmed visited Eritrea’s capital Asmara on Aug. 17, a visit that was not announced by his office, while en route to an official meeting in Turkey.
Spokespeople for Eritrea’s information ministry, Ethiopia’s prime minister and Ethiopia’s military did not immediately respond to requests for comment.
War broke out last year between Ethiopia’s federal government and the Tigray People’s Liberation Front (TPLF), which controls the Tigray region, and more than two million people have since been forced to flee their homes.
Eritrean troops entered Tigray to fight alongside federal forces in a conflict marked by abuses including rape, according to investigations by Reuters, the U.N. and international human rights organizations.
The Ethiopian government said in April that Eritrean troops had begun withdrawing.
However, the spokesperson for the Tigrayan forces has repeatedly said that the Eritrean soldiers have remained. He was not immediately reachable for comment on Tuesday.
Reporting by Giulia Paravicini in London; Additional reporting by George Obulutsa and Ayenat Merise in Nairobi; Writing by Maggie Fick; Editing by Joe Bavier and Giles Elgood