Dyfed-Powys Police is investigating a road traffic collision on the A483 between Llanbister and Llandewi, that occurred at approximately 1pm on Sunday, March 9.
The collision involved a grey Cupra Born car and a gold Triumph Bonnerville motorcycle.
One person was airlifted to hospital with life-changing injuries.
The road remained closed until around 9pm.
Police are now appealing for anyone with information, dash cam or CCTV footage, that could help them with their investigation:
📞| 101
Alternatively, contact the independent charity Crimestoppers anonymously by calling 0800 555111, or visiting crimestoppers-uk.org
Quote reference: 166 of March 9th