The incident took place around 1am on Saturday, March 9 on Wilson Street.
The force released an image of a man, who they believe may be able to assist with the investigation. They are asking him or anyone who knows him to come forward.
He is described as white, aged 35 to 40, of stocky build. He has dark hair worn in a bun and a beard.
In the footage, he is wearing a tan coloured jacket, checked shirt and blue jeans.
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Detective constable David Crawford said: “ I would urge the male pictured or anyone who may recognise him or has information about this incident to contact us as soon as possible.”
Anyone who can assist is asked to contact Police Scotland via 101, quoting incident number 0266 of March, 9 2024. Alternatively, you can contact Crimestoppers on 0800 555 111 where information can be given anonymously.