Given that 17 of the burials were children between five months and 16 years old, it's suspected that the cranial deformation itself was responsible for the deaths.
Following the abduction, the French government said it believed the couple, their children aged five, eight, 10 and 12, and an uncle were taken across the border into Nigeria, probably by Boko Haram.
Since Savile's death in 2011 aged 84, allegations have emerged that lead police to believe the late Radio 1 DJ and Jim'll Fix It presenter sexually abused hundreds of childrenand young people over five decades.