Mamu was arraigned on March 21 by the Federal Government on a 10-count charge bordering on terrorism financing, aiding terrorist operations in the country among others.
The Kaduna-based Islamic scholar was further accused of collecting various sums of money in different currencies from families of victims of the train attack, on behalf of the Boko Haram terrorists’ sect.
The Federal Government told the court that investigations revealed that the defendant collected an aggregate sum of $420, 000 from the families of the victims, as well as N21 million from another set of families of the train attack.
In the charge that was signed by the Director of Public Prosecution of the Federation, M.B. Abubakar, the Federal Government said the defendant exchanged voice note communications with one Baba Adamu, identified as spokesperson of Boko Haram.
On September 6, 2022, Mamu was arrested in Cairo, Egypt, while he was on his way to Saudi Arabia for a lesser Hajj with his family members.
He was subsequently brought back to the country and immediately taken into custody by the DSS which subsequently obtained a detention order against him.
He was alleged to have convinced the terrorists to discuss ransom payments with individual families of the hostages of the train attack instead of the Chief of Defense Staff Committee set up by the Federal Government for his financial gain.
He was said to have been nominated by the terrorists that attacked the Abuja-Kaduna bound train sometime in March 2022 which took scores of persons hostage.
Mamu was alleged to have collected ransoms on behalf of the Boko Haram terrorists from families of hostages, confirmed the amount and facilitated the delivery of the same to the terrorists.