A person has been airlifted to hospital with life-threatening injuries following a serious crash on the A483 between Newtown and Dolfor on Monday.
Emergency services were called to the scene at around 1pm after a single-vehicle collision involving a blue Mitsubishi ASX. The road was closed in both directions while paramedics, police, and fire crews attended, before reopening at around 4.30pm.
Dyfed-Powys Police said the casualty was flown to hospital for treatment.
Officers are now appealing for witnesses, particularly anyone who may have dash-cam footage of the collision.
Anyone with information is asked to contact police via the Dyfed-Powys Police website, by emailing 101@dyfed-powys.police.uk, or by calling 101.