The M1 Dublin-Belfast motorway was closed for some time this morning following an incident involving livestock transport.
The incident happened at around 3.30 am between junction 5 and 6 on the M1 northbound near Balbriggan.
A number of cattle had to be put down after a trailer transporting them turned over on the motorway.
It is reported that there were up to 50 young cattle in the trailer when it turned over and a veterinary practitioner was called to the scene to euthanise a number of the injured animals.
The driver, a man in his late teens, was uninjured in the single-vehicle incident.
The Gardaí, Dublin Fire Brigade and a veterinary practitioner attended the scene and the road was reopened a number of hours later.
Investigations into the incident are ongoing.