Shocking photos of genocide in Borno shared by Muslim Cleric

Renowned Muslim Cleric ,Dr. Ahmad Abubakar Mahmud Gumi shared these photos on his Facebook page..It shows civilians lined up in a secluded area,and later they are pictured on the floor and some being buried in a mass grave by security forces...It is not clear who they were or where they were brought from or when it happened..But he says they are innocent civilians..

Some of the comments said they were probably Boko Haram ,while others claim what ever the case, the killings are unjustifiable..
Photos below..Viewer discretion 

* Note the boy in line struggling to let go, wearing a a pink t-shirt and light blue stripped shorts was standing and later is among the dead corpse *