Police are treating the death of a man in his 60s as murder.
The victim's death followed an incident on the Caddy Road area of Randalstown, Co Antrim, shortly after midnight which involved a number of vehicles.
A woman in her 50s was also assaulted and taken to hospital for treatment to her injuries which are not believed to be life threatening.
Detective Chief Inspector Gareth Talbot said: "At this time investigations are at an early stage but I am treating this as murder.
" I appeal to anyone who noticed any suspicious vehicles or activity in the Caddy Road area at around midnight to contact CID."
Alliance Antrim councillor Neil Kelly condemned those responsible for the murder.
Mr Kelly said: “People in the area are shocked at what has taken place. This appeared to be a callous attack by those with no regard for the lives of others. I would condemn those responsible and urge them to hand themselves into the Police.
“I would like to extend my sympathies to this man’s family and friends. I hope that the woman who was also attacked is able to make a full recovery. My thoughts are with her at this difficult time.
“The people responsible for this man’s death are very dangerous individuals who must be urgently apprehended by the Police. They must face justice in the courts, so I would urge anybody with any information about this incident to contact the Police or Crimestoppers.”