CCTV images have been released in connection to an incident at Celtic Park during an Old Firm match in April.
Police have issued the images of two men in the stadium who they are looking to speak with.
The incident occurred during the game on April 8 in which Celtic won 3-2 against Rangers.
Constable Thomas Hughes of Police Scotland said: “Officers are keen to talk to these males as we believe they may have information which could assist with our enquiries. The males pictured or anyone who may recognise them is asked to contact us.
“Anyone with any information is asked to contact 101 quoting reference 0814 of Sunday, April 8. Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.”