The materials were intercepted at Itawure Junction near Efon-Alaye, in Efon Local Government Area of the State.
The Brigade Commander, 32 Artillery Brigade, Akure, Brig.-Gen. Aliyu Momoh made the disclosure on Thursday night at media briefing.
The arrested men were Olufemi Ose, Segun Akanbi and Biodun Erinfolami.
Materials found in the vehicle included ballot papers, rubber stamps, ink pads, reflective jackets bearing the Independent National Electoral Commission(INEC), among others.
“You only need to have your voter card and use your thumb to print the appropriate area on the ballot paper.
He said that it was in Akure that another person asked him to come over to Ado-Ekiti to help him convey some waste items.
“We got here yesterday (Wednesday) and a vehicle was loaded before ours started loading in the early hours of Thursday,” he explained.
When asked where his truck was loaded, Ose said it was at INEC office in Ado-Ekiti.
When contacted, INEC Resident Electoral Commissioner, Alhaji Halilu Pai, confirmed that the materials were actually loaded from their store in Ado-Ekiti but they were waste items.
“Those materials are what we call waste papers that have been auctioned to people.
“The materials were approved for the firm to move away for us to prepare for the coming election.
“The company has the approval of the national headquarters of INEC,” he said.
On the presence of rubber stamps and ink pads for the 2014 poll in the materials, Pai said there was no way they could have been there.
The REC said his office got approval from Abuja on April 3, this year to auction the materials and blamed the firm that got the job for coming late to pick them.
He also denied any compromise on the part of INEC and its staff.