The leaders of Chad and Sudan have signed a peace accord, pledging to deny refuge to each other's rebel groups.

Presidents Omar al-Bashir of Sudan and Idriss Deby of Chad reached the agreement Wednesday at a summit hosted by Libyan leader Moammar Gadhafi in Tripoli.

Their accord calls for Sudan and Chad to work toward normal relations, and to not use their territories to support harmful activity against each other.

Chad has accused Sudan of harboring rebels opposed to Mr. Deby, while Sudan has said that Chad is backing rebels fighting Sudanese government forces in war-torn Darfur.

The accord calls for the creation of an African force to preserve security on the Chad-Sudan border. Which countries will supply troops and finance the force has not been determined.

Some information for this report was provided by AP and Reuters.