Sudanese aircraft have bombed an area near Bentiu in South Sudan, killing a boy and injuring at least two other people, an official and a witness said today.

Sudanese planes bombarded a disputed oil town near South Sudan's border, a southern military official said, and a doctor said bombs aimed at strategic sites in the south's Unity State killed five people.

South Sudan's president has today vowed that the nation will not withdraw its troops that this week entered a disputed border region with Sudan.