Workers have been removed from a BP North Sea platform after a positive Covid-19 case on board.
An individual started showing signs of the virus on the Andrew installation on Sunday before later testing positive and being returned home to self-isolate.
BP said four other workers, who were in close contact with the positive Covid case, were identified and put into self-isolation before being transferred to shore on Monday.
A spokesperson said BP followed its well-practiced escalation procedures for Covid on board the North Sea platform.
The news follows an apparent resurgence in Covid cases offshore, with an outbreak on the Shell Nelson platform earlier this week leading to more than a dozen workers being down-manned.
That came less than a week after an outbreak on the EnQuest Producer FPSO in the Cromarty Firth, which led to 16 people being put into isolation.
In July, figures reported to the HSE suggested just 10 people had caught the virus while working offshore since April, though the regulator stressed those are generally delayed and under-reported.
Oil and Gas UK had said the figures suggested the risk of the virus offshore was being brought “under control”.
It comes amid a second wave of Covid-19 cases hitting Scotland and the UK more widely.
The Scottish Government has reported 1,429 new positive cases since Tuesday, with 15 deaths related to the virus.
The Andrew area consists of five fields producing through one platform, about 140 miles north-east of Aberdeen.
It started producing in 1996 and pumped out 25-30,000 barrels per day last year.