Onwuamadike, aka Evans, made his plea Wednesday.
Kidnappers, on conviction, faces the death penalty in Lagos.
Gov. Akinwumi Ambode signed it to law February !
He and five others were arraigned on a two-count charge of conspiracy and kidnapping.
The only female defendant, however, pleaded not guilty to all the charges.
The judge ordered that all the male defendants be remanded at Kirikiri Maximum Prison while the female be kept at the female section of the prison.
Earlier on Tuesday, a Lagos Division of the Federal High Court adjourned till September 5 to hear arguments from Evan’s lawyer and police lawyers on the fundamental rights application brought by Evans.
Justice Abdulaziz Anka had initially fixed Tuesday to deliver judgment on the suit but a lawyer to the Inspector General of Police and the Nigeria Police Force, David Igbodo, appearing for the first time since the hearing began, said he had filed a counter affidavit
before the court.