Police are continuing to investigate an assault which occurred in Edinburgh City Centre around 1.25 am on Wednesday 2 February 2022.
The incident happened on Frederick Street. A 46-year-old man was assaulted causing serious injuries which required hospital treatment.
Officers have released an image of a man whom they believe can assist them with their enquiries.
He, or anyone who recognises him, is asked to come forward.
He is described as white, of medium build, with short dark hair, and aged in his mid-twenties. He is shown in the image wearing a light blue hooded sweatshirt with a logo on the left chest.
Detective Constable Melissa Silva, from Edinburgh CID, said: “I am asking that the man pictured makes contact with the police in order that further enquiries can be conducted. I am also asking that if any member of the public recognises the man that they make contact with the police.
“Anyone with information is asked to contact Police Scotland on 101 and quote incident 0161 of 2 February, 2022 or make an anonymous report through the charity Crimestoppers on 0800 555 111.”