Navy's submarine secrets 'were stolen in burglary and then blackmailer demanded money for their return'

A Polish man appeared in court yesterday accused of stealing ‘sensitive and restricted’ documents relating to some of the Royal Navy’s submarines.

The court was told the files went missing when a naval dockyard worker’s Plymouth flat was burgled.

But the incident only came to light when the Polish embassy was contacted about the documents – which refer to the ‘design and operation of certain submarines’ – by someone demanding a substantial amount of money.

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