Nigeria and Cameroon are locked in an argument over who killed Boko Haram leader Abubakar Shekau and where he was killed.

A Cameroon military source, according to Cameroon Concord, said on Sunday night that Shekau was killed following an aerial bombardment of his hideout inside Nigeria.

Releasing photos of Shekau, the Cameroonian army claim the terrorist was killed  during a cross-border raid within the Nigeria territory by its military.