A Dunedin man needed surgery after being stabbed in the stomach when "a mixture of playfighting and alcohol" got out of control.
Detective Sergeant Brett Roberts, of Dunedin, said police received several 111 calls about a fight at a house in South Road about 5pm on Saturday.
Officers found two injured men at the scene, one of whom had been stabbed in the stomach and later required surgery at Dunedin Hospital.
The men knew each other and both were taken hospital under police guard, Det Sgt Roberts said.
The second man had facial injuries requiring treatment. Police recovered a knife at the scene that appeared to have been used in the fight.