A man has died after he was punched and fell backwards following an apparent road rage incident.
The two men involved in the incident are both lorry drivers in their 50s.
Their two lorries were being driven into Rosslare Europort in south Co Wexford shortly before 7pm yesterday when the lorries came close together.
The two vehicles were then driven into the port and parked.
The drivers of the lorries jumped out of their cabs and came face-to-face.
After an argument in which witnesses said that blows appeared to have been exchanged, one driver fell backwards and hit his head on the ground.
The other driver then climbed back into his cab and drove back out of the port, apparently unaware of the injuries sustained by the other.
The injured driver was found on the ground when a check was being made at his cab. He was pronounced dead at the scene.
Gardai had been contacted and stopped the other lorry a short distance from the port.
The driver, who is Irish, was arrested and taken for questioning to Wexford Garda Station.
He was being detained there last night under Section 4 of the Criminal Justice Act.
The dead man has been identified as a Romanian driver and efforts to contact his family were being made late last night.
The scene was preserved for forensic examination, as part of a garda investigation led by Supt James Doyle of Wexford station.
A post-mortem examination of the body is expected to be carried out later today at Wexford General Hospital.
Wexford councillor Ger Carthy offered his condolences to the man's family and friends. "My sympathies of course go out to this man's friends and family," he told the Herald.