Jangebe abduction: How can Nigeria secure its schools from bandits?

279 schoolgirls abducted from a boarding school in Zamfara state last week have been released. With schools now prime targets of armed bandits, Nigeria's president Muhammadu Buhari has warned that the government will not succumb to blackmail by bandits and criminals who target innocent school students in expectation of huge ransom payments. Dennis Amachree, CEO of Zoomlens Security joins CNBC Africa for more.