Sudan's National Intelligence and Security Service chief Mohamed Atta on Sunday accused South Sudan of continuing supporting the Revolutionary Front rebel forces.

Atta said at a press conference that South Sudan's army forces were still present at five areas inside the Sudanese territories.

Meanwhile, Sudanese Information Minister Ahmed Bilal Osman announced that his government would stop implementing the Joint Cooperation Agreement, signed by Sudan and South Sudan in the Ethiopia's capital of Addis Ababa in September 2012.