At least 15 Burkina Faso soldiers and army auxiliaries were killed in an attack in the north of the country on Wednesday, three security sources said on Thursday.
The attack took place in the West African country's Centre-North region, a hotbed of jihadist activity linked to al Qaeda and Islamic State, and was carried out by unidentified armed assailants, the sources said.
One source said the troops were guarding water pipes that are frequently destroyed by the groups, which have blocked access to several parts of Burkina Faso's north and east.