An investigation into alleged breaches of quota regulations are under way by Marine Scotland after a Faroese pelagic trawler was detained off Shetland.
The 275ft Christian I Grotinum was escorted to Lerwick harbour by the fisheries protection vessel Hitra on Sunday afternoon.
The vessel is berthed at Dales Voe while Marine Scotland officers carry out their investigation.
The Faroese pelagic fishing fleet is entitled to catch mackerel in EU waters but is not allowed to do so within a 12-mile zone around Shetland.
In March this year the EU brokered a controversial compromise in the four year long political row over fishing rights in the north-east Atlantic when the Faroese were awarded a 12.6% share in the mackerel quota, which currently amounts to 156,000 tonnes.
At the time the deal was severely criticised by the local fishermen’s association.