The London Police has denied claims that the Olympics security operation had been compromised after confidential documents detailing anti-terrorism discussions were found on a train. The police said information in the dossier, which reportedly included details of pre-Olympics rehearsals, the names and mobile numbers of police officers and minutes of meetings at which anti-terrorism measures were discussed, were operationally sensitive.

The dossier was found by a commuter on a train in Dartford, Kent recently and handed to a British tabloid newspaper before being returned to police. The police said one of its officers had lost his bag containing security documents and immediately reported it.