Two university students have claimed they were "assaulted" by staff and detained for nearly six hours by police ahead of a visit by the Princess Royal.
Hona-Luisa Cohen-Fuentes and Euan Kidston claimed they were studying in the University of Edinburgh on Tuesday when they were "roughly seized" by staff and told: "We have someone really important coming here, we can't have the likes of you roaming around."
The students allege they were then prevented from leaving by staff who said they "could be any random scum off the street".
University chiefs say the students "could not provide a satisfactory explanation" for their presence in a restricted area, which was being prepared for Anne's visit.
A Police Scotland spokesman said: "During a security check at an Edinburgh University venue two people were found within a restricted area and were subsequently detained. They were later released without charge."
The Orkney Islands have the highest rate of multiple sclerosis in the world, University of Edinburgh scientists said.
Researchers found the rate for probable or definite cases of MS in the Orkneys is now 402 per 100,000 - up from a previous high of 309 per 100,000 in 1974.
Dr Jim Wilson, of the university's Centre for Population Health Sciences, said: "Our study shows that Orkney has the highest prevalence rate of MS recorded worldwide.
"These findings may reflect improved diagnostic methods, improved survival or rising incidence. We are trying to work out why it is so high, but it is at least partly to do with genes."
The study appears in the Journal of Neurology, Neurosurgery & Psychiatry.
Scientists have identified a gene that could be instrumental in the growth of prostate tumours.
The discovery could lead to improved cancer diagnosis and treatment, according to researchers from the University of Edinburgh.
They looked at genes which control how the prostate gland is formed and found that one gene, called decorin, may have a key role in tumour growth.