Boko Haram militants kill 11 Chad troops - military source
Seventeen attackers died also in the fight, the source told Reuters. Chad is a leading contributor to a 8,700-strong regional force fighting Boko Haram, which has expanded beyond its northeast Nigerian heartland to attack Chad, and other neighbours, Niger and Cameroon.
(Reporting by Madjiasra Nako; Writing by Andrew Heavens)