‘If you started running, they shot you’ – inside Nigeria’s growing kidnapping crisis

Then, in May this year, gunmen on motorcycles attacked three schools in Oyo state, south-west Nigeria, one of the few regions that was previously considered relatively safe.

Fatima explains how the raids unfold: "You could have 100 motorcycles, and each one could be carrying three people.

Thousands of people have joined government-backed vigilante groups to fight, and the BBC spoke to one who said his armed group had killed many bandits.