A man found in a crashed car in north Belfast had been stabbed multiple times in the chest, police have said.
The PSNI said the 47-year-old victim was in a stable condition in hospital last night.
Officers responding to a report of a car crash on the Crumlin Road yesterday found the driver had sustained serious knife wounds.
A short time later a 43-year-old man who had gone to a hospital, also with stab wounds, was arrested on suspicion of attempted murder. He was last night in police custody.
PSNI Detective Sergeant Kenneth Leckey said: "Officers received a report of a one-vehicle road traffic collision shortly before midday on the Crumlin Road.
"On police attendance the 47-year-old male driver of the car was discovered to have serious stab wounds to his chest and required urgent medical attention. He was taken to hospital where he remains in a stable condition.
"A short time later a 43-year-old man presented himself to hospital with stab wounds and has since been arrested on suspicion of attempted murder."
The officer appealed to anyone who witnessed an altercation in the Crumlin Road, Woodvale or Twaddell areas just before midday yesterday to contact Tennent Street police on 101.