A healthcare worker who has just returned from West Africa hasbeen diagnosed with Ebola and is being treated in hospital in Glasgow.
The patient, who arrived from Sierra Leone on Sunday night, is in isolation at Glasgow's Gartnavel Hospital.
All possible contacts with the case are being investigated. The patient will be transferred to high level isolation in London as soon as possible.
Sources told the BBC the Ebola case involved a female aid worker.
NHS Scotland said infectious diseases procedures had been put into effect at the Brownlee Unit for Infectious Diseases at Gartnavel.
The patient returned to Scotland from Sierra Leone late on Sunday via Casablanca and London Heathrow, arriving into Glasgow Airport on a British Airways flight at about 23:30.
While public health experts have emphasised that the risks are negligible, a telephone helpline has been set up for anyone who was on the Heathrow to Glasgow flight. The number is: 08000 858531
The patient was admitted to hospital early in the morning after feeling unwell and was placed into isolation at 07.50.
First Minister Nicola Sturgeon has chaired a meeting of the Scottish Government Resilience Committee (SGoRR) and has also spoken to Prime Minister David Cameron.
According to UK and Scottish protocol for anyone diagnosed with Ebola, the patient will be transferred to the high level isolation unit in the Royal Free hospital, London.
Ms Sturgeon said: "Our first thoughts at this time must be with the patient diagnosed with Ebola and their friends and family. I wish them a speedy recovery.
"Scotland has been preparing for this possibility from the beginning of the outbreak in West Africa and I am confident that we are well prepared."