Man calmly walks from NSW prison cell after alleged horrific crime

| 01.08,19. 04:12 AM |


Man calmly walks from NSW prison cell after alleged horrific crime

Mervyn Davidson was lead back to his jail cell after appearing in court on murder charges after a prison riot at Silverwater jail. (Supplied)


Disturbing new vision of the moments leading up to a fatal fight inside the prison system has been released by the NSW Supreme Court.


The security vision was played during the judge-alone trial of Mervyn Davidson, 45, accused of killing fellow inmate Alfredo Pengue, 54, inside his Silverwater jail cell.


The clips show Mr Davidson in a communal living area, with other inmates. He can be seen pacing, before entering the stark cell. A short time later, the vision depicts guards racing up the stairwell, and then calling for back up.


A second clip played to the court shows Mr Davidson handcuffed and flanked by prison officers. He's led into the cool night air, down corridors and back into a jail cell, after allegedly murdering Mr Pengue.


At the time of the incident, the Dapto man was awaiting sentence for a vicious attack on an Aldi worker at Albion Park Rail in 2017.


While at Silverwater Metropolitan Remand and Reception Centre, the court heard Mr Davidson had consumed a cocktail of drugs, made up of ice and five Xanax tablets.


Mr Davidson is accused of strangling and bashing Mr Pengue, in a 25-minute window of time.


The 45-year-old, who has schizophrenia, previously told the NSW Supreme Court he had no memory of the strangling.


During the murder trial, a doctor called to give evidence, said Mr Davidson had schizophrenia, but noted, that "didn't automatically give him a mental illness defence."


The medical professional said drugs could have triggered rage.


Mr Davidson told doctors he heard voices telling him to kill people, but he has no memory of the incident, and there was no known animosity between the two inmates.


Both the Crown and the Defence agree that central to the murder trial is Mr Davidson's mental health.


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