Man dies in custody in north Qld

A prisoner has died in his cell at a north Queensland prison, prompting an internal investigation.

Queensland Corrective Services found the 57-year-old man unresponsive in his cell at the Townsville Correctional Centre about 7am on Wednesday.

Officers immediately began CPR and paramedics were called, but the prisoner died at the scene, a QCS spokesperson said.

An internal investigation into the man's death is underway, and a report will be prepared for the coroner.