CCTV image of man released by officers in Glasgow
The incident happened between 1am and 3am on Sunday, 5 December, 2021, within a property in the Rottenrow East area.
The man in the image is described as around 5ft 6ins, of medium build, with short dark hair.
It is believed the man was also in the West Regent Street area in Glasgow city centre earlier that night and officers are keen to trace him or anyone who knows him.
Detective Inspector Lesley-Anne McGee said: “We believe the man may have information which could help our investigation and I would urge anyone who can assist to come forward.
“Anyone who may be able to help can contact Police Scotland on 101, quoting incident number 0610 of Sunday, 5 December, 2021, or make a call anonymously to the charity Crimestoppers on 0800 555 111.”