Months of clashes over land in southern Ethiopia have forced more than 800,000 people from their homes, the International Red Cross (ICRC) says.

There is a rapidly swelling humanitarian crisis in Gedeo and West Guji, where the displaced are sleeping on the floors of crowded schools, office buildings and churches and food and water are scarce, the ICRC added.

Last year hundreds of thousands of people were displaced during clashes between ethnic Oromos and Somalis.