Montgomeryshire AM Russell George will write to previous Wales and Border franchise holders Arriva Trains Wales about the ongoing disruption to Welsh train services.

Rail services in Powys and across the country have been hit with delays and cancellations this month, with Transport for Wales(TfW), the new company appointed to run the Wales and Border network, blaming the condition of the rolling stock among the key factors for the delays.

At an evidence session with Transport for Wales held this morning, the Economy, Infrastructure and Skills Committee of which Mr George is chair heard that at one point 36 units, 9% of the Wales and Borders fleet, were removed from service for urgent maintenance work.

Following the meeting in Cardiff today, the committee will write to previous franchise holders Arriva Trains Wales to get their views before producing it's report on autumn rail disruption.

They say they will also consider additional data from TfW arising from their ongoing investigations in to what went wrong.

The Committee will also hear from the Cabinet Secretary for the Economy and Transport, Ken Skates AM, who will give evidence on the transfer to the new franchise next week.

Committee Chair Russell George AM said the disruption seen on the railways this Autumn was a 'cause of major concern'.

"The Committee has agreed to beef up the work it had planned to do scrutinising the handover to a new rail franchise, to ensure lessons are learned from the problems that have bedevilled the early weeks of the Transport for Wales era," he said.

The number of trains should be back to normal "within the next few days to a week", according to TfW.

"What no-one expected to happen is the number of wheel flats to occur on that particular weekend where I think we had nearly 20 units suddenly come out of service over the Saturday and Sunday," the company's chief executive James Price told the committee.

Under the previous operator Arriva Mr Price said "the fleet as a whole was not maintained quite as well as it could have been".

"We were mostly aware of that. I think it's a bit worse than we thought actually," he added.