The market was packed, like it was every Saturday, when the Nigerian air force jets screamed overhead.

Soon after, swathes of trading stalls at a market in Jilli, a small town in Nigeria's northeastern Yobe state, were reduced to ash, with incinerated bodies lying in the rubble, a video from the scene?shows.

Survivors, human rights groups and local officials say it is yet another massacre of civilians by the Nigerian air force.