Greek and Serbian Olympic officials deny they were involved in selling tickets to the London Games on the black market.
The newspaper quoted Greek Olympic Committee President Spyros Capralos as telling undercover reporters posing as illegal ticket sellers that he had "pulled strings" with London organizing chairman Sebastian Coe to obtain extra tickets.
The Greek committee says the story is "untrue." It adds that Capralos' comments, which were filmed using a hidden camera, were "misleading" and "fragmentary."
The general secretary of Serbia's Olympic committee, Djordje Visacki, says national bodies are not in charge of the tickets.