It's thought the attack could last several days.
Woman Assaulted In Graveyard
Police investigating a sexual assault in a graveyard are appealing to anyone who was in a nearby bar on the same evening to come forward.
A woman was assaulted in Greyfriars Kirkyard in Edinburgh's Old Town on Thursday.
Officers want to speak to anyone who was in the area of the kirkyard and the nearby Frankenstein bar on George IV Bridge between 9.30 and 10.30pm.
They are also appealing for anyone who saw a woman and a man leaving the kirkyard at around 10.30pm to make themselves known.
Detective Inspector Tom Carty said: ''We're currently pursuing a number of lines of inquiry and as a result of this work, we've established that a group of males and females were within the bar prior to this attack.
''I want to hear from anyone who may have have been in the premises on Thursday evening to contact police.''
Anyone with information can contact police on 101 or call Crimestoppers anonymously on 0800 555 111.
Sturgeon says Trump is on the "wrong side" of the debate.
The boys were found inside the Sainsbury's store at 2am on Tuesday.
The incident, which happened at Ibrox station, was reported to British Transport Police before 8pm on Saturday.
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