Sudan's army on Wednesday said it had fought with South Sudanese troops and their rebel allies, expelling them from two areas along the border.

"SAF troops attacked Kafindibei on May 7 and after heavy fighting secured it completely," the Sudanese Armed Forces (SAF) spokesman Sawarmi Khaled Saad was quoted as saying by the official SUNA news agency.

"Today, May 9, troops continued their advance to Kafia Kingi... and they succeeded in defeating the SPLA and their allies," he said, referring to the South's army.

Khartoum's army announced on Friday that Sudan was committed to a UN Security Council resolution calling for a cessation of hostilities effective that day.

At the same time, it accused South Sudan of continuing aggression by occupying points along the border.

Sudan's foreign ministry first mentioned the occupation of Kafindibei and Kafia Kingi in a statement on May 1, but it described the areas as disputed.