Ethiopian Airlines suspended service to three northern cities after regional forces took control of airports and clashes spread to nearby areas, Reuters said.
On Wednesday, Tigray People's Liberation Front forces seized airports in Mekelle, Shire, and Axum, prompting state-owned Ethiopian Airlines to suspend all flights to those cities.
The seizure followed the TPLF's announcement on Sunday of the 'Ethiopian Peoples' Forces Alliance for Survival,' a seven-group coalition aimed at overthrowing Prime Minister Abiy Ahmed and challenging the 2022 Pretoria Agreement.
Fighting spread to neighboring Afar and Amhara regions, where the Tigray army claims to wage a 'defensive war' against 'intensive bombardments,' while federal officials assert the TPLF launched an 'all-out offensive' against government positions.
The African Union called for 'immediate de-escalation' after the escalation disrupted humanitarian operations, while the US government condemned a recent drone strike on a Catholic Relief Services convoy carrying food aid.
Observers warn the escalation could destabilize the Horn of Africa as regional actors like Eritrea risk involvement, echoing fears this conflict could mirror the 2020-2022 war that killed an estimated 600,000 people.