Iarnród Éireann has said there will be significant delays to its Dublin to Galway and Westport rail services for the remainder of the evening after a train struck a herd of cows in Co Offaly.

Passengers are being transferred to a relief train following the incident.

The 3.35pm Dublin to Galway train was forced to stop at Meelaghans outside Tullamore when it struck a herd of cattle at around 4.35pm..

Rail workers found three or four cattle dead on the rail tracks and more are believed to be under the train. 

They are working to clear the track and a relief train has been brought in to transfer passengers, who had been onboard the train for a time in hot conditions. 

Iarnród Éireann has said there will be significant delays to Galway and Westport rail services for the remainder of the evening following an incident. It apologised for the inconvenience.