Terrorist sect, Boko Haram has executed one of six aid workers attached to Humanitarian group, Action against Hunger.
In a statement released on Wednesday, the charity group confirmed the assasination and called on relevant authorities to help secure the release of the remaining captives.
Two drivers, three health ministry personnel and an employee of Action Against Hunger were abducted on July 18 in the northeast.
Following their abduction, Islamic State West Africa Province (ISWAP) released a video of the hostages pleading with the federal to help secure their release.
It is not the first time the sect will be abducting and killing aid workers in Nigeria.
Two female staff for the International Committee of the Red Cross (ICRC) were executed by the sect last year after months after they were abducted from an IDP camp.