The suspects were nabbed on June 15.
The Defence Headquarters, DHQ, on Tuesday said a terror kingpin was detected in the ongoing screening of some arrested 486 suspects.
This was contained in a statement by the Director of Defence Information, Chris Olukolade, who said the kingpin was in the list of wanted terrorists in Nigeria.
The name of the detected suspected terrorist was however not provided.
The suspects were nabbed along Enugu-Port Harcourt expressway while travelling in a Hiace Hummer bus at night on June 15.
Mr. Olukolade said the identified terror kingpin has been taken into custody and that further development would be communicated in due course.
He said that so far, other security agencies, including the para-military, have joined in the screening exercise to ascertain the status of the remaining suspects.
He added that those identified as possible security risk or illegal immigrants would be separated from their colleagues for further action.