PARIS (Reuters) - An air strike by the French "Operation Barkhane" battling Islamist militants in the Sahel has killed 10 members of a terrorist group in Burkina Faso during the night of Feb. 7 and Feb. 8, France's chief of staff said in a statement on Thursday.

       Four civilians were also killed in the operation, close to the town of Ouahigouya, near the border with Mali.

       (Reporting by Benoit Van Overstraeten; Editing by Sandra Maler)