South Sudan’s President Salva Kiir says an attempted coup by soldiers loyal to his former deputy Riek Machar has been put down.
Mr Kiir said the government was in full control of the capital, Juba, after a night of heavy fighting between soldiers in the presidential guard.
A night time curfew has been put in place and a number of arrests have reportedly been made.
Several people were reported injured and hundreds have fled to a US base.
Hilde Johnson, the UN’s special representative in the country, said she was “deeply concerned” and urged “all parties in the fighting to cease hostilities immediately and exercise restraint”.
“I have been in touch regularly with the key leaders, including at the highest levels to call for calm,” she said