SIX officers at HMP Parc have been arrested on suspicion of misconduct in public office as police continue to investigate a series of serious allegations at the troubled Bridgend jail.
A spokeswoman for South Wales Police said the arrests followed “a series of incidents” at the privately run prison, which has faced growing scrutiny over violence, inmate deaths, and alleged corruption.
The latest arrests come as part of an ongoing criminal investigation into conduct at the Category B facility, operated by security firm G4S.
In a statement, police confirmed that during a second phase of arrests in January, the following individuals were detained on suspicion of misconduct in public office:
A 35-year-old man from Bridgend
A 40-year-old man from Swansea
A 38-year-old man from Barry
A 50-year-old man from Taibach
A 23-year-old woman from Cardiff
A 36-year-old man from Llanelli
Five have been bailed while enquiries continue, and one has been released under investigation.
The second wave of arrests follows an earlier operation in September 2024, when four Parc prison officers were arrested on suspicion of assault and misconduct in public office. Those arrests were linked to the discovery of social media messages allegedly shared between staff, reportedly referring to the excessive use of force and other serious misconduct.
Police have now confirmed that no charges were brought in that first phase, but the investigation remains live.
Detective Chief Inspector Dean Taylor said officers are working closely with G4S as part of the inquiry.

A spokeswoman for the company said: “We are aware a decision has been made not to proceed further with a number of initial cases. It is not appropriate for us to comment on other cases which are ongoing, but we will continue to support police colleagues.”
Meanwhile, it has also emerged that police are probing a separate allegation that a group of officers at Parc assaulted an inmate, leaving him with serious injuries including possible broken ribs and heavy bruising. The incident was reported last Saturday and remains under investigation.
G4S has declined to comment directly on the alleged assault.
The prison has been engulfed in controversy over the past year, with a steady stream of reports highlighting issues with violence, drug use, staff shortages, and inmate deaths.
In the wake of last year’s riot at Parc, G4S replaced the prison’s director by mutual agreement. The role was taken over by Will Styles, formerly of G4S-run HMP Five Wells in Northamptonshire.
Earlier this week, The Herald reported that police are investigating an alleged sexual assault on a young inmate on X1 Wing, said to have involved coercion and scalding.
Zack Griffiths of the HMP Prisons Justice Group, speaking about that case, said: “A vulnerable young person was left exposed to a violent, dangerous offender, and the consequences have been devastating. This isn’t just an individual crime—it is a catastrophic failure of the prison system to safeguard those in its care.”
The Ministry of Justice’s anti-corruption unit is working alongside South Wales Police as part of the wider investigation into the jail.
HMP Parc is the largest prison in Wales and one of the few in the UK operated by a private firm. The growing number of allegations has sparked renewed calls for an independent inquiry into its management and oversight.
In addition to the ongoing police investigations, the prison has recorded multiple deaths over the past 12 months. At least eight inmates are reported to have died in that period. Some of those deaths are understood to be drug-related or suspected suicides, though not all have been officially confirmed.
Campaigners and whistleblowers have warned that conditions inside Parc have become dangerously unstable, with claims that vulnerable prisoners are frequently left without adequate supervision or support.
None of the officers arrested to date have been charged, and all remain innocent unless proven otherwise.
The Herald has contacted G4S and the Ministry of Justice for further comment.