During the operation around £150,000 in cash was recovered from various addresses across the North East.
Two motor boats and two caravans were also seized along with nine motor vehicles.
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Nicola Sturgeon said the London mayor's comments that likened Scottish nationalism to racism were a sign of 'desperation'.
Stephen was last seen wearing a black coat, jeans, black hat and was carrying a bright blue nike bag.
How does the rest of Saturday look weather wise?