A cyclist remains in a "critical condition" after he was involved in a collision with a parked bus.

He was airlifted to hospital with serious injuries following the crash on the A483 in Llanbadarn Fynydd on Wednesday, May 15, at around 7pm.

Joe Emms, from Cardiff, said on Twitter that he'd stayed with the cyclist while they waited for the emergency services to arrive.

"Just witnessed a very nasty RTA involving a cyclist on the A483 in Powys, which resulted in what looks like very serious injuries," he said.

"Stayed talking to the chap and reassuring him until @DyfedPowys & @air_ambulance arrived. Hope he’s ok, take care all on the roads."

Dyfed-Powys Police say they are investigating the "serious" crash and are appealing for anyone with information to contact the Serious Collision Investigation Unit by calling 101 quoting DP-20190515-338.