Detectives are hunting a gang who stabbed three men in a "vicious attack" at a house in Ayrshire in the early hours of the morning.
The victims were assaulted by three men at a house in Saltcoats at 0115 BST.
One sustained head and back injuries and was detained in hospital. The other two were treated for head injuries before being released.
Strathclyde Police appealed for witnesses or for anyone with information to come forward.
The attackers were all white. Two were in their early 20s and heavily built. One of them was described as 6ft tall, wearing a black T-shirt with white writing.
Det Insp John Hogg said: "Our inquiries into the circumstances surrounding this vicious attack are at an early stage.
"These three men have received serious injuries as a result of this assault and it is fortunate that their injuries were not life-threatening.
"I am keen to speak to anyone who may have information on the suspects or who was in The Braes area of Saltcoats around 1am on Sunday morning."