A Boko Haram splinter group has executed four of the six Nigerian hostages who were being held in captivity after being kidnaped in July, the Paris-based aid group, Action Against Hunger, said on Friday
The Islamic State West Africa Province (ISWAP) group ambushed the humanitarian workers on July 18, killing the driver.
Three health ministry personnel, an employee of the French aid group and two drivers, were kidnapped by ISWAP fighters while delivering humanitarian aid near the town of Damasak in Borno State.
Another hostage was killed in September. The humanitarian group has condemned the execution and called for the immediate and unconditional release of the last hostage.