The Department of State Services (DSS) says its operatives recovered incriminating materials after searching the residence of Tukur Mamu in Kaduna on Thursday.
Mamu, who is the spokesperson of the Kaduna-based cleric, Sheikh Gumi, is the negotiator between the Federal Government and terrorists who abducted passengers from the Abuja-Kaduna train on March 28.
He later announced his withdrawal as the lead negotiator in securing the release of the abductees after he alleged a threat to his life by the Federal Government.
However, the DSS spokesman, Dr Peter Afunanya, on Thursday, said appropriate security agencies executed the search warrant.
READ ALSO: DSS: Bandits’ negotiator in our custody to answer questions
He stated that incriminating materials recovered included military accoutrements, large amounts of different currencies in different denominations, and financial transaction instruments.
Afunanya assured that Mamu would have his day in court to defend himself.
The DSS, on Wednesday, confirmed the detention of Mamu in its facility.
He was earlier arrested at the Cairo International Airport in Egypt while awaiting a connecting flight to Saudi Arabia.
Mamu was later flown back to Nigeria by Interpol on Wednesday and was arrested alongside his family members by the DSS operatives who were stationed at the entrance of the international wing of the Aminu Kano International Airport in Kano.
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