The Defence Headquarters, the Department of state security DSS and the Nigerian Police parade 15 suspected killers of ex CDS, Air Chief Marshal Alex Badeh.
Panel of investigators recovered arms in the homes of high profile suspects.
20 persons are involved in the killings and 15 arrested so far.
Panel of investigators say the killing of the ex CDS had no political undertone.
One Aliyu Usman led the killers, the panel said.