Police have released CCTV images of two people they want to speak to following an incident outside Celtic Park.
The incident took place at the stadium on May 7 when thousands of fans gathered to greet the team after they secured their 53rd league title.
Anyone who recognises the man and woman pictured in the images is asked to get in touch.
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Constable Daniel Brady of Police Scotland said: “We are keen to talk to this man and woman as we believe they may have information which could assist with our enquiries.
"Those pictured or anyone who may recognise them is asked to contact us.
"Anyone with any information is asked to contact 101, quoting reference 2116 of 7 May. Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111."