The leaders of five countries in Africa's Sahel region are meeting in Burkina Faso as they attempt to improve co-ordination in the fight against Islamist militant groups and human trafficking.

Chad, Mali, Mauritania, Niger and Burkina Faso - known as the G5 Sahel - are backed by France.

On the eve of the summit, 14 people were killed by suspected jihadists near Burkina Faso's northern border with Mali.

The jihadist threat has spread since 2011 when instability engulfed Libya.

Whilst Mali and Nigeria have been worst hit, Burkina Faso, which had long been peaceful, has been increasingly targeted with more than 300 people killed over the last three years.