A man in his 40s has been stabbed at a house in Ballynahinch in the early hours of Sunday.
Police received report of an altercation at a house in Windmill Gardens at around 1.45am.
A man, aged in his 40s, was taken to hospital for treatment to a number of stab wounds. He is said to be in a stable condition.
A 22-year-old woman and three men, aged 20, 26, and 40, have been arrested and remain in police custody.
Detective Inspector Darren Handley is appealing for anyone who witnessed the incident or anyone with any information that can assist with the investigation to contact Detectives in Newry on 101 quoting reference 185 17/11/19.
You can also contact Crimestoppers anonymously on 0800 555 111.