A North Sea oil platform has been shut down and workers taken off, following a subsea structural inspection.
EnQuest said it evacuated the Thistle Platform, about 125 miles north-east of Shetland, in a precautionary move on Monday evening.
The company said 115 personnel were transferred to a nearby platform by helicopter.
The coastguard said its helicopter and two from the Norwegian offshore sector were involved.
Coastguards were made aware of the situation at about 18:30 BST.
An EnQuest spokeswoman said: "EnQuest can confirm it has proactively down-manned the Thistle Platform today in a precautionary move following a preliminary subsea structural inspection today.
"The platform has been safely shut down in accordance with planned procedures.
"EnQuest is liaising with all relevant authorities including the Maritime and Coastguard Agency."
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