Police Scotland have released images of a male and female they wish to speak to in connection with a "serious assault" that took place in Edinburgh city centre.
Detectives are continuing their inquiries into the incident, which took place around 11.20pm on the evening of Sunday, December 12, 2021, on Market Street, directly underneath North Bridge, Edinburgh.
Police previously reported that a woman was left with a serious head injuries after being assaulted on the street outside Edinburgh Waverley.
The 31-year-old was rushed to Royal Infirmary of Edinburgh following the attack in an 'extremely busy area' of the capital.
The male, is thought to be in his mid-30s and is described as being white, around 5ft 9in tall and of medium build with short dark hair.
He was wearing a grey or blue padded jacket and a two tone blue hooded jumper, blue jeans, along with carrying the orange plastic bag and baseball cap.
The female in the images is described as white, in her mid-30s, around 5ft 5in and of small build.
She was wearing a knee length black padded jacket with the hood up and had small-framed glasses.
Detective Constable Gary Lipscombe, from Edinburgh CID, said: “I would urge the male and female, or anyone who has information relating to the male and female, depicted in these images to make contact with the police.
“Members of the public can contact Police Scotland via 101 quoting incident number 3829 of 12 December, 2021.
Alternatively, you can call Crimestoppers on 0800 555 111, if you wish to remain anonymous.”