A rebel group in South Sudan called Saturday on the United Nations to evacuate Warrap state within three days, saying it would launch an attack to bring down the local government.

We would also advise the civilians to evacuate all towns and move to villages in order to be safe, the South Sudan Liberation Army (SSLA) said in a statement.

Officials in South Sudan said earlier Saturday the same group had attacked a town in neighbouring Unity state.

(Reporting by Hereward Holland; Writing by Ulf Laessing)