UN Secretary-General Antonio Guterres.

South Sudanese forces stopped a UN peacekeeping convoy at gunpoint and beat the unit's commander in the latest clash with peacekeepers in the war-wracked African country, Uganda’s Daily Monitor reported on Friday.

UN Secretary-General Antonio Guterres told the Security Council that South Sudan's defence minister had apologised for the September 21 incident in Juba, the capital.

The UN convoy was stopped and surrounded by about 100 officers from South Sudan's national security service Guterres’ confidential report stated.

"At one point the contingent commander accompanying the convoy was physically assaulted before diverting to UN House," in Juba, it added.

However, this was not the only incident of concern to the UN. Guterres listed 17 incidents during the month of September when convoys were blocked, peacekeepers harassed and in some cases detained by South Sudan's forces.

The 14,000-strong United Nations Mission in South Sudan is being reviewed by the UN secretary-general and he will present his recommendations to the council before it decides on extending the mission in December. 

- African News Agency (ANA)