The Vice Chairman, Nigerian Basketball Federation, Ugo Udezue, confirmed the development in a statement on Tuesday.
Expressing frustration over the lack of explanation, Udezue described the move as a form of sabotage.
This has jeopardised Nigeria’s participation in the tournament which begins today with a match against Egypt.
The players, who had been training in Abuja after returning from Abidjan, are devastated as their chance to compete in the FIBA World Championship fades.
Udezue said, “First of all, it’s rather unfortunate that an African country needs a visa to travel to another African country. Secondly, this is against the spirit of sportsmanship. These kids have sacrificed too much for a visa consular officer to deny them the opportunity to represent Nigeria globally.”