The report asserted photographs would show Sergei Antonov, who was later acquitted of involvement in the attack, was in St Peter's Square when the pontiff was shot, The Times of London reported.
At his trial, Antonov, who was station manager in Rome for the Bulgarian state airline, said he was in his office at the time of the shooting. He had been accused, along with the Soviet secret service, of complicity with Turkey's Mehmet Ali Agca, who shot and wounded the Pope.
Italian media reported the commission examined three photographs, one of which allegedly was of Antonov in St Peter's Square. But Antonov's lawyer claimed it was a case of mistaken identity and that the man in the photograph was an American tourist of Hungarian origin.