Both trains involved in a fatal crash in mid Wales were moving at the time of the collision, investigators have revealed.

David Tudor Evans, 66, died after two trains crashed near the village of Llanbrynmair in Powys on 21 October.

It was initially said that a service from Shrewsbury to Aberystwyth hit a stationary train which was travelling from Machynlleth to Shrewsbury.

Now, the Rail Accidents and Investigations Branch (RAIB) has said both trains were moving at the time of impact and there was conflicting evidence about how fast they were going.

Mr Evans, from Capel Dewi, Ceredigion, died after the crash and four others were seriously injured.

A further 11 people sustained injuries which required hospital treatment

On Tuesday, the RAIB issued an update on the investigation, adding that an automated system that helps train wheels grip tracks failed.

It said initial analysis indicated that the 1J25 service from Shrewsbury to Aberystwyth was travelling between 15mph (24 km/h) and 24mph (39 km/h).

The 1S71service from Machynlleth to Shrewsbury was travelling at about 6mph (10 km/h) in the opposite direction.

The RAIB is continuing to analyse evidence relating to the collision speed, which it said remained an area of ongoing investigation.