Explained: Nigeria's Spiralling Kidnapping Crisis

As the country grapples with security challenges on several fronts, hostage-taking has spiralled into a nationwide industry and become a favoured tactic of bandit gangs and jihadists.

Ten years after the Chibok schoolgirls' kidnapping, Nigeria is facing a resurgence of mass abductions.

The anniversary of Boko Haram's infamous attack comes after two large-scale kidnappings -- one in the same northeastern state as Chibok, the other in northwestern Kaduna state, where over 130 children were seized from their school.

As the country grapples with security challenges on several fronts, hostage-taking has spiralled into a nationwide industry and become a favoured tactic of bandit gangs and jihadists.