The massacre happened in an area overrun by Islamist groups – but comes as the government investigates claims of human rights abuses by its own armed forces.
At least 60 civilians have been killed by men wearing army uniforms in northern Burkina Faso, officials say.
The attack took place on Friday in a village in Barga, in Yatenga province, close to the border with Mali.
Burkina Faso‘s prosecutor Lamine Kabore did not provide details about Friday’s attack but said those injured were being treated in hospital.
“My office was alerted about the seriousness of some of the facts. I therefore gave instructions to the investigation unit to carry out investigations in order to illuminate the said facts and hear all the people who are involved,” he said.
The killings took place in an area overrun by Islamist groups linked to al Qaeda and Islamic State.
The groups have been blamed for multiple attacks which have left thousands dead and displaced an estimated two million people over six years.
Earlier this month, militants were accused of killing at least 44 people in the north-eastern province of Seno.
However, members of Burkina Faso’s military have also been accused of killing civilians in the country, where the government is said to control less than 50% of the nation’s territory.
News of the massacre comes amid growing concern about violence elsewhere in Africa, in Sudan.