At least 11 people were killed and 53 injured when a bus hit an explosive device in central Mali on Thursday.
According to a hospital source the explosion occurred on the road between Bandiagara and Goundaka in the Mopti area.
Earlier, police and local sources gave a provisional toll of 10 dead and many seriously injured.
For more than a decade, Mali has struggled to contain activity by armed rebel groups that have killed thousands of people and forced hundreds of thousands from their homes.