Four men were taken to hospital after being stabbed outside a city nightclub in the early hours of Saturday morning.
Police are now appealing for witnesses to the incident after being called to the Cookies and Cream nightclub in Savoy Crescent at 4.10am.
During the incident three men suffered stab wounds to the stomach or abdomen. They are receiving treatment at Milton Keynes Hospital but their injuries are not considered to be life threatening.
Another man received a stab wound to his lower back. He was treated at hospital but has since been discharged.
Investigating officer, Detective Sergeant Phil Turner-Robson of Milton Keynes CID, said: “I am appealing for anyone who witnessed the incident to contact police immediately. Alternatively, if you don’t want to speak to police, you can call Crimestoppers anonymously.
“I would like to reassure the public in Milton Keynes that incidents such as these are not common, and that the Force is fully investigating the matter.”
Any witnesses can call police on 101 or Crimestoppers, anonymously, on 0800 555 111.