The governor of Wales' newest, largest prison, HMP Berwyn, in Wrexham, has been suspended.
The Prison Service said that Russell Trent has been removed from his post after allegations were made against him.
Mr Trent has been suspended in accordance with our standard procedures while an investigation is carried out into allegations made against him.
Russell Trent was appointed governor of HMP Berwyn in 2015.
HMP Berwyn was opened in February 2017.
The prison can house more than 2000 prisoners.