A teenager arrested over a stabbing in Sheffield has been released after police questioning.
The 18-year-old was arrested on suspicion of attempted murder over a knife attack in an alleyway off Langsett Close, between Upperthorpe and Walkley, on Tuesday night.
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He spent yesterday being quizzed by detectives before they released him under investigation as police enquiries continue.
POLICE: Stabbing victim in 'very serious condition' after knife attack in Sheffield
A 21-year-old man was left fighting for life after being stabbed in his chest.
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He was taken to the Northern General Hospital, where he underwent emergency surgery.
South Yorkshire Police said he is in a 'very serious condition'.
Anyone with information should call South Yorkshire Police on 101.