We are appealing for witnesses after an altercation between a number of men in Blackpool.
We were called at 03:47 hours on Tuesday 24th April to reports of the incident outside Home and HQ nightclub on Talbot Road, Blackpool.
A 19-year-old man suffered a stab wound to his chest and was taken to Blackpool Victoria Hospital for treatment.
Another man was also taken to hospital after being found unconscious. The 23-year-old man was later arrested on suspicion of section 18 assault and released under investigation, pending further enquiries.
Police are now appealing for witnesses to come forward with any information which could help with the investigation.
Anyone with information is asked to call Blackpool Police on 01253 607049, or failing that, 101, quoting crime reference WA1808404.