A service of remembrance was held to mark 25 years since the Piper Alpha disaster. 167 men were killed in an explosion on the oil platform.
All the passengers and crew from a helicopter that ditched in the North Sea have arrived safely back on land after a dramatic rescue.
A leak at the Elgin platform, has left a cloud of gas stretching for miles across the North Sea
A Scottish Government spokesman said:
We are aware that a helicopter has ditched in the North Sea, south of Sumburgh.
And we understand that all 19 people on board are now safe and well following the dispatch of emergency services to the site.
Scottish ministers are being kept updated on the situation and we will release further information when it becomes known.
All 19 passengers and crew have been accounted for, Aberdeen Coastguard said.
It is not yet known what their condition is.
It is understood the helicopter made a "controlled ditching" into the sea.
The RNLI says all 19 oil workers aboard a ditched helicopter in the North Sea have been accounted for.
Three rescue helicopters and three RNLI lifeboats have been sent to the scene of the ditching, which is located between Orkney and Shetland, reports STV News.
The Shetland Coastguard is currently coordinating the rescue of 19 oil workers following the controlled ditching of a helicopter in the North Sea.
The Chancellor has announced a tax break for the North Sea oil and gas industry to encourage the exploitation of older "brown" fields with the aim of increasing tax revenues.
George Osborne has said: "This is good news for the North Sea, good news for jobs and the broader economy.
"It will give companies the incentive to get the most out of older fields, creating jobs and delivering more revenue for taxpayers."
The operator of a gas leak on an oil platform in the North Sea says it has completely stopped.
Work to "kill" the leak started last week on Total's Elgin platform, around 150 miles from Aberdeen. The leak was stopped after heavy mud was pumped into it.
Richard Dixon, director of WWF Scotland, said the news the leak had stopped was welcome, but pointed out it was the second serious leak in the North Sea in two years.
"We should be trying to give up our addiction to oil and gas, and not seeking it out in more difficult places with the risks to the environment that poses when things go wrong," he said
Scottish Secretary Michael Moore has welcomed news the gas leak in the North Sea has been halted.
He said: "This is welcome news from the Elgin platform and good progress. It is important that the work continues to manage and monitor the well over the coming days to ensure the operation to stop the gas leak has been a complete success.
"The UK Government has been in touch with the company throughout this incident and DECC has closely monitored progress throughout. I am certain that key lessons will be learned from this leak which can be applied across the sector."
– Total spokesperson
Total is today able to announce that a well-intervention operation has stopped the G4 well leak on the Elgin complex, 240km from Aberdeen in the UK North Sea.
The well-intervention operation, which involved pumping heavy mud into the leaking well, began on May 15 and the leak was stopped 12 hours later.