The detective who investigated the alleged assault on a prisoner by a prison officer in Mountjoy told the jury the gardai first heard about the incident from the victim's mother.

The supervising officer of a prisoner whose jaw was allegedly broken by a colleague has denied he tried to influence other officers' statements relating to the incident.

A colleague of a prison officer who allegedly broke a prisoners jaw told the

A medical orderly involved in treating a prisoner who allegedly had his jaw broken by a prison officer said he could not refresh his memory of that day because the record book was missing.

A prison officer who claims he witnessed a colleague breaking a prisoner's jaw said his supervising officer tried to influence him into giving a misleading statement to the governor.

The trial is continuing today of a prison officer accused of breaking a prisoner's jaw.