A man fell ill while in custody at a police station over the weekend and subsequently died in hospital.
The 20-year-old fell ill and died at Newtown police station in Powys on Saturday, a Dyfed-Powys Police spokesman said.
The man's death will now be investigated and the matter has been referred to the Independent Office for Police Conduct.
A force spokesman said: “ Dyfed-Powys Police can confirm that on the morning of Saturday, November 23, a 20-year-old man was taken ill while in police custody at Newtown police station.
"He was taken to hospital where he later sadly died. A full investigation has commenced and Dyfed-Powys Police has referred the matter to the Independent Office for Police Conduct (IOPC) who will now conduct an independent investigation.
"We are providing full cooperation to the IOPC investigation. Our thoughts are with the family of the man at this sad time.”
