African Union Commission chairperson, Moussa Faki has called for an end to the hostilities in Ethiopia.
This comes after reports Ethiopia's capital Addis Ababa could be overrun by rebels within "months if not weeks".
In a statement on Wednesday, Faki called on the parties involved to embrace dialogue instead of war, to safeguard the territorial integrity, unity and national sovereignty of the Federal Republic of Ethiopia.
"The Chairperson calls for the immediate cessation of hostilities, the full respect for the life and property of civilians, as well as state infrastructure," the statement said.
He told the parties to caution their supporters against acts of reprisal against any community, and refrain from hate speech and incitement to violence and divisiveness.
"The Chairperson calls on the parties to engage with the AU High Representative for the Horn of Africa, former Nigerian President H.E Olusegun Obasanjo."
Faki reminded those involved of their international obligations in compliance with international humanitarian and human rights law, especially the protection of civilians and ensuring access to humanitarian assistance by communities in need.
He added that the AU is committed to working with the parties to come to a consensual political process.
On Wednesday, an Oromo group allied to the Tigrayan fighters said Addis Ababa could be overrun by rebels within "months if not weeks".
Odaa Tarbii, the spokesman for Oromo Liberation Army, which has also claimed recent advances in Amhara and in the Oromia region surrounding Addis Ababa, said his group intended to topple Abiy's government, calling his removal "a foregone conclusion".
The Tigray People's Liberation Front (TPLF), which has been fighting Prime Minister Abiy Ahmed's government for a year, has claimed significant territorial gains in recent days.
TPLF has claimed control of two key cities in Amhara, about 400 kilometres (250 miles) north of Addis Ababa.
The government has denied claims of TPLF territorial gains.
