N'Djamena - Suspected militants from Nigeria's Boko Haram group killed 11 soldiers from neighbouring Chad in a overnight attack in a border region, a Chadian military source said.
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.