The aircraft was released on the orders of President Umaru Yar'Adua, according to the reports of the Lagos-based Compass newspaper on Wednesday.
The aircraft was intercepted by eagle-eyed security operatives when it stopped over to refuel on June 17 and it was found that it was carrying arms and ammunition.
Upon interrogation, the crew said the consignment on board was meant for the government in Equatorial Guinea.
The authorities in Malabo, the Equatorial Guinean capital and the Ukrainian government admitted to the mission of the aircraft and its crew members.
