A killer who battered a mother to death with a brick almost 20 years ago has died, the Northern Ireland prison service has confirmed.
David Brown, 46, was serving a life sentence for the murder of Roberta St Clair-Gunn in May 1994.
The prison service said he had been transferred from Maghaberry high security jail in Co Antrim to an outside hospital after taking ill on Friday.
"It is with regret that the prison service announces the death of David Brown, a life sentence prisoner at Maghaberry Prison," a statement said.
"The prison service director general Sue McAllister has offered her condolences to the family and friends of Mr Brown, saying her thoughts were with them at this sad time."
The Prisons Ombudsman is investigating the death.
Brown pleaded guilty to the brutal murder of Mrs St Clair-Gunn, who was 46 and from the Sandy Row area of south Belfast, in May 1994. He was sentenced to serve a minimum of 17 years in 1995.
Mrs St Clair-Gunn, a mother of two girls, suffered fatal head injuries after being beaten with a brick after a night out. Her partially clothed body was dumped in the Shankill Road area of west Belfast.
Brown, who had a history of violent offending, had been convicted of rape in 1987 when he was aged 21.
When he killed Mrs St Clair-Gunn he had been on licence for less than two months.