Police have released CCTV footage of a woman they want to identify after she was rescued from a lake at the University of East Anglia in Norwich.

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)

Officers were called to the scene at 2.40pm on Wednesday after concerns were raised for the safety of a woman who was seen to go into the lake.

The woman was rescued from the water and taken to the Norfolk and Norwich University Hospital by air ambulance where she remains in a critical condition.

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)

MORE: Identity of woman rescued from UEA lake remains a mystery say police

No personal belongings, other than a key attached to a red Cath Kidston key ring, have been found and despite carrying out a number of enquiries, officers have been unable to identify her.

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)

The woman is described as being aged in her 40s or 50s, of medium build, with short dark greying hair. She was wearing dark blue jeans, with a brown leather belt patterned with metal studs, a grey long-sleeved top with a sequin pattern on the front, white/cream faux fur front button coat and brown laced ankle boots.

MORE: Woman taken to hospital after entering Norwich university lake

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)

Police are keen to hear from anyone who believes they may know the identity of the women, or saw a woman fitting that description in the area around the UEA.

• Anyone with information should contact Norwich CID on 101 quoting reference 243 of the 18 October 2017.

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)

Norwich Evening News: Clothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk ConstabularyClothing from the woman who was rescued from a lake at the UEA in Norwich. Photo: Norfolk Constabulary (Image: Norfolk Constabulary)