South Sudan’s rebel leader has accused the government of violating a ceasefire hours after it came into effect.
Riek Machar said the army attacked his forces in two northern states, allegations which the military denies.
President Salva Kiir, under the threat of sanctions from the UN, signed a peace agreement on Wednesday, despite “serious reservations”.
Several ceasefires to end the brutal 20-month conflict in the world’s youngest nation have failed to hold. The ceasefire came into effect at midnight local time on Saturday.
Mr Machar said his troops remained committed to the ceasefire despite the reported attacks in northern Unity and Upper Nile states, but would act in self-defence if it continues.
“The government is unable to control its own troops,” Mr Machar said in Ethiopia.
Army spokesman Col Philip Aguer denied that there were any government troops operating in the areas where the alleged attacks took place.
“These are mere fabrications by the rebels. We don’t have any report of clashes,” he is quoted by AFP news agency as saying.
The government has also accused Mr Machar of failing to properly order his troops to stop fighting.