Special envoys from the African Union and the US have returned to Ethiopia in a bid to revive talks for a ceasefire and find ways to end the year-long conflict.

Both the US' Jeffrey Feltman and Olusegun Obasanjo, the AU’s special representative, arrived in the country on Thursday,

Mr Feltman met Foreign Minister Demeke Mekonnen, who said the government had allowed aid trucks into Tigray and humanitarian flights into towns in neighbouring Amhara region.

During the meeting, Mr Demeke said humanitarian aid flights were allowed in to Kombolcha and Lalibela, adding that 369 aid trucks were allowed to enter Tigray, according to a tweet by the government’s communications service.

Ethiopia's government spokesman, Dina Mufti, told journalists that Mr Obasanjo "was shuttling between the various forces", the AFP news agency reported.

"The same thing holds true for Mr Feltman," Mr Dina was quoted as saying.

Since last November, the government and rebel Tigray forces have been engaged in a war that started in Tigray and spread into neighbouring Amhara and Afar regions.

The conflict has killed thousands of people, forced millions from their homes and hundreds of thousands others are facing famine.