Harri Pullen, 27, had been in a relationship with jail nurse Elyse Hibbs, 27, and engaged in phone sex with prison officer Ruth Shmylo, 26, over a four-year period in HMP Parc, Wales.
HMP Parc in Bridgend, South Wales, which opened 1997, was previously praised as safe and well-run, and was described in largely positive terms during its last inspection in 2022.
The messages allegedly show staff members at HMP Parc in Bridgend, south Wales, mocking one inmate who had self harmed as 'daft' and boasting of 'punching the f*** into' another.