The government of Burkina Faso said that an armed group attacked a cattle market and a humanitarian convoy and killed at least 25 people.
Twenty-five people were killed and more wounded in the attack on the market in the eastern village of Kompienga, while five civilians and five military police were killed near the northern village of Foube.
It said that armed groups targeted a humanitarian convoy returning from Foube after delivering supplies.
The violence underscores deep instability in parts of Burkina Faso, which has been battling armed groups with links to al-Qaeda and ISIL, ISIS since 2017.
Hundreds have been killed in the past year in the Sahel nation, and more than half a million people have fled their homes due to the violence, which has also raised ethnic and religious tensions.