41-year-old Graham Johnson was killed during a row over a TV remote.
A man in his 30s remains in custody following his arrest in connection with the death of an inmate in Cork Prison last weekend.
41-year-old Graham Johnson died from a stab wound received during a row over a TV remote control in the prison kitchen last Saturday.
Gardai arrested a man at the prison yesterday morning and he is being held at Mayfield Garda Station.
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