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Clashes between federal and Tigrayan forces have erupted in Ethiopia's northern Tigray region, prompting the suspension of flights, security and diplomatic sources told AFP on Thursday.
The renewed tensions risk a return to conflict in the volatile region, which three years ago emerged from a brutal war between Ethiopian forces and the Tigray People's Liberation Front (TPLF) that the African Union says killed at least 600,000 people.
Hostilities broke out in recent days in Tsemlet, western Tigray, an area claimed by forces from the neighbouring Amhara region who have refused to withdraw despite a peace agreement signed in Pretoria at the end of 2022 requiring them to do so.
"The situation appears to be deteriorating," the security source said.
A diplomatic source seeking anonymity told AFP the Tigray forces are facing "the ENDF (Ethiopian army) alongside Amhara militias."

Local farmers walk next to a tank of alledged Eritrean army that is abandoned along the road in Dansa, southwest of Mekele in Tigray region, Ethiopia, on June 20, 2021.
Two Ethiopian Airlines officials, also speaking on condition of anonymity, told AFP that flights to Tigray, operated by the state-owned carrier, had been suspended for "operational reasons," without providing further details.