The explosion occurred on the road between Bandiagara and Goundaka in the Mopti area on Thursday afternoon, a security source said, according to Aljazeera.
The region is known as a hotbed for violence by roaming armed groups.
“We have just transferred nine bodies to the clinic. And it’s not over yet,” said Moussa Housseyni of the local Bandiagara Youth Association, adding that they were all civilians.
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.
Mines and improvised explosive devices (IEDs) are among the rebels’ weapons of choice. They can explode on impact or be detonated remotely.
A report by MINUSMA, the United Nations mission in Mali, found that mines and IEDs had killed 72 people in 2022 as of August 31. Most of the victims were soldiers – but more than a quarter were civilians, the report said.
Last year, 103 people were killed and 297 injured by IEDs and mines.
RHM/PR