Trains have been suspended between Hereford and Newport due to a train fire.
Emergency services are responding to the incident on the Welsh Marches line near Pontrilas.
Martyn Brennan, Operations Director for Transport for Wales said: "We can confirm that a fire took place underneath one of our trains today.
"Thankfully no one was hurt and our train crew worked quickly and professionally to get all customers off safely and onward road transport has been arranged.
"Transport for Wales is working closely with our partners in Network Rail to minimise disruption surrounding this incident.
"A full investigation into the cause of the incident will be carried out and we apologise to all those affected."
Rail passengers are being warned there will be disruption on the line in both directions. Customers should check their journeys for updates here:
Appeal to locate Herefordshire man who failed to appear at court
Traders frustrated as road closure extended
Wins for local firms among new highways contracts
Hereford restaurant seeks licence again
Scam websites posing as Hereford firm shut down
Farm plans fourth poultry shed
Free 30-minute parking scheme launches in Herefordshire
Prolific shoplifter jailed for Herefordshire offences