A man has suffered potentially life-threatening injuries in a serious assault in Londonderry.
The 28-year-old was attacked in the early hours of Monday morning at a house in the Cornshell Fields area of the city.
Four men, believed to have been involved in the incident, are reported to have made off in a grey Volkswagen Golf.
Three other men and two women, who were in the house at the time, were not injured.
Detective Sergeant Richard Donnell is appealing for anyone who witnessed the incident or anyone who may have seen a grey-coloured Volkswagen Golf in the area at the time to contact detectives at Strand Road station in Derry on 101 quoting reference 107 02/12/19.