After 13 years evading capture mark Lilley was arrested by Spanish police today after being found naked, hiding in his panic room.
The panic room was concealed behind a wardrobe in his bedroom at his Spanish villa.
The joint Spanish National Police and Serious Organised Crime Agency (Soca) operation involved more than 40 armed officers.
Dave Allen, head of the Fugitives Unit at Soca, said: "Lilley was a dangerous man with access to firearms. He had evaded capture for a long time by moving around Spain and using false identities. Now he's behind bars where he belongs and extradition proceedings are under way.
"My message for other fugitives on the run is a simple one - we will hunt you down and you will face justice for your crimes."
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