BBC documentary investigates the rampant cult killing in Nigeria

It is a sinister organised crime group whose bloodthirsty henchmen routinely engage in drug smuggling, human trafficking, kidnapping, extortion, rape and murder. Bizarrely, the ultra violent Black Axe gang, whose secret rituals have seen it compared with a cult, started out as a university fraternity in Nigeria in the 1970s and where new members are forcibly recruited, while many volunteer.