Two men have been arrested after trying to fraudulently exchange foreign currency at a post office in Beverley.
Humberside Police said the men from London and Leicester had been released on bail while investigations continue.
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A spokesman said: "They tried to exchange around 12,000 Kronas worth of mixed Swedish and Icelandic Krona for pounds. The difference between both currencies is around £750.
"It’s believed they tried to exchange the money at a travel agent and supermarket before officers were alerted."