But the reported incident in Amhara, which has a long-running border dispute with Tigray, has raised concerns that the conflict could extend into a wider war after regional forces were sent to support federal
Meanwhile, the UN has raised concerns about the influx of refugees into Sudan, which it says could destabilise a nation already supporting about a million people displaced from other African countries.
The refugees arriving in Sudan, the majority of whom are believed to be children, are hungry and frightened, aid agencies say, and an immediate ceasefire would allow them to help thousands of civilians still trapped inside Ethiopia.