Thousands of pounds worth of slate has been stolen from Workington.
More than £10,000 worth of green Buttermere slate was taken from a yard at Pittwood Road, Lillyhall.
It is believed it was stolen between November 23 and 28.
Anyone with information about the incident or who knows of anybody attempting to sell large quantities of slate is asked to contact police on 101 or 101@cumbria.police.uk or Crimestoppers anonymously on 0800 555 111.
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