One of the six aid workers of humanitarian group, Action Against Hunger, who was kidnapped in July by Boko Haram have reportedly been executed on Wednesday.
“The armed group holding captive an employee of Action Against Hunger (ACF), two drivers and three health ministry personnel, have executed a hostage,” the Paris-based organisation said in a statement.
“Action Against Hunger condemns in the strongest terms this assassination and urgently calls for the release of the hostages,” it said, giving no more details on the identity of the victim.
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The charity said it was “extremely concerned and is fully mobilised to ensure that the remaining hostages can be quickly and safely reunited with their families”.
The six Nigerian aid workers — one woman and five men — were seized by jihadists affiliated to the Islamic State group during an ambush on their convoy close to the border with Niger on July 18.
ISWAP group released a video following the abduction of the female ACF staff member pleading for the release of the hostages with her five male colleagues behind her.
The kidnapping was the latest to target aid workers in the conflict-hit region after the abduction and killing of two female staff for the International Committee of the Red Cross (ICRC) last year.
ISWAP is a splinter faction of jihadist group Boko Haram that swore allegiance in 2016 to IS leader Abu Bakr al-Baghdadi.
It has repeatedly attacked military bases and targeted aid workers in northeast Nigeria.