Smoked salmon supplier Bleiker's Smokehouse has collapsed into administration and is subject to a fraud investigation by the National Food Crime Unit.
All 86 staff at the Leeming Bar business, which was founded in 1993, were made redundant as no buyer could be found.
Administrators at FRP said the loss of a major contract - understood to be with discount supermarket Aldi - had prompted the collapse and now officials at the National Food Crime Unit say they are investigating a number of alleged issues to do with country of origin claims on some Bleiker's products.