The Nigerian air force says its planes have attacked a convoy of Boko Haram Islamist militants destroying the vehicles and killing the jihadists inside them.

A PR firm, which issues statements on behalf of the military, said the same Islamist militants were involved in the recent attack on a Nigerian military base in Borno state.

Although the military has not disclosed how many troops died at the Metele base, soldiers who shot a video that seems to show the aftermath of the attack said around 100 soldiers had been killed.

A video of the attack itself has caused a great deal of shock in Nigeria and President Muhammadu Buhari has promised more resources for the soldiers fighting Boko Haram.