Sudan is denying accusations that it supported a rebel raid and seizure of a town in the Central African Republic earlier this week.
In a statement from Sudan's embassy in the CAR capital, Bangui, Sudan insists it had no involvement in the rebel attack. Sudan says the incident took place in a border area that cannot be totally monitored by Sudanese authorities.
Central African Republic President Francois has accused Sudan's President Omar al-Bashir of being behind the attack.
Rebels who seized the CAR town of Birao on Monday describe themselves as a coalition of movements opposed to the Bozize government.
Birao is about 800 kilometers northeast of Bangui, and about 50 kilometers from Sudan's border, in a region the CAR government does not fully control.
Over the past year, insecurity has grown in the northern part of the CAR, which borders both Chad and Sudan's war-torn Darfur region. The operation of armed groups in the area has forced tens of thousands of people to flee their homes.
Central African Republic officials have appealed to the United Nations for help, asking the world body to send peacekeepers.