Police are seeking information relating to a double stabbing in Timaru in the early hours of Saturday morning.
Two men aged 20 and 21 were stabbed during the incident on Church Street near a tavern.
The 21-year-old victim was assaulted a second time after being tended by a member of the public and was taken to hospital by ambulance with a moderate, non-life threatening injury.
The 20-year-old victim left the scene and approximately three hours later admitted himself to hospital.
One of the men has since been discharged.
Two Timaru men, aged 19 and 25, have been charged with assault.
A Timaru woman, 18, has been charged with possession of a knife and possession of cannabis.
One has been bailed and the other two are being held in custody.
They will appear in court on Monday morning.