Dorset - A secret agent has sparked a security alert by losing his briefcase on a train, it was revealed last night.
The MI5 man reportedly realised his papers were missing when he arrived in Dorset for a meeting last month.
Spy chiefs ordered police to search every train and station on the line, The Sun reported.
But Last night officials admitted the secret papers were still missing. The loss follows a series of similar blunders which have seen a laptop computer stolen from another MI5 operative, an MI6 spy lose his computer in a tapas bar and a senior Army official's laptop stolen at Heathrow.