Police outside the nightclub this morning

Police were called to the club on Milton Street, in the city centre, at around 1am this morning, to reports an 18-year-old had been stabbed in the chest.

Police outside the nightclub this morning

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The man was taken to hospital, where he remains in a serious but stable condition.

Police today appealed for witnesses and said they were working with the club's managers and a licensing review was underway.

Detective InspectorÂ Jamie Henderson, who is leading the investigation,Â said: 'There were around 800 people at the bass-line event in Corporation nightclub last night and we are keen to hear from anyone who saw anything.

'The circumstances surrounding the incident are under investigation and officers are reviewing CCTV and working with the club.

'The managers of Corporation took the decision to close the premises immediately after the incident and a review is currently underway with our licencing officers.'

Sheffield Superintendent Paul McCurry added: 'We are working alongside our partners and the venue to understand exactly what happened and to ensure that we eliminate the use of knives in premises.

'We want people to feel safe in Sheffield and to be able to enjoy a night out without fear of crime.'