Eight people were injured during a fight in a Northampton bar.
Police officers were called after the fight broke out in Faces in Bridge Street, Northampton, at about 4am today.
Eight people were injured in the incident, including six with stab injuries.
Five people are being treated at Northampton General Hospital, and three are at University Hospital Coventry.
Bridge Street, which was closed to traffic for a time while officers conducted a search of the area and the club, is now open.
Witnesses can call Northamptonshire Police on 101 or Crimestoppers anonymously on 0800 555 111.