The family of a woman who was stabbed more than 100 times by a man suffering a psychotic episode has described their shock at the manner of her death while she was a patient in a psychiatric hospital.

A resident at a psychiatric hospital in Waterford says she witnessed a fellow resident being repeatedly stabbed by the man accused of murder.

A 36-year-old man, who has been charged with the murder of a fellow patient at a Waterford psychiatric hospital, has been further remanded in custody.

A 36-year-old man has been charged in connection with the investigation into the fatal stabbing of a 55-year-old woman in Waterford last night.

A woman who was fatally stabbed in a Waterford city psychiatric hospital last night has been named as Maria O'Brien, 55.