More than 160 passengers who were on a train that was attacked in the northern Nigerian city of Kaduna last month remain missing or unaccounted for, as details of possible collaboration between Boko Haram jihadists and local bandits have emerged.
Ten people were killed, two in the weeks since the attack on 28 March, when gunmen bombed the rail tracks, derailing the train before gunning down passengers and train staff, and abducting scores of people.
