The judge in the Clydach murder trial is to begin his summing up the case against defendant David Morris.

Mr Morris, 42, is accused of killing three generations of the same family at a house in the Swansea Valley on 27 June 1999.

Mandy Power, 34, her daughters Katie, 10, and Emily, eight, and her mother Doris Dawson, 80, all died in what has been described by the prosecution as a "massacre".

Mr Morris, of nearby Craig Cefn Parc denies the murder charges in the case which began at Swansea Crown Court in April.

Mr Morris denies all the charges

The trial has heard Mr Morris had been having an occasional sexual relationship with divorcee Mrs Power.

But his team has claimed the "probable" murderer was the victim's girlfriend, former police officer, Alison Lewis, who was previously arrested and questioned by South Wales Police but released without charge.

The prosecution claims Mr Morris turned killer after his sexual advances were eventually rejected by the mother-of-two.

The case against him is that he then set fire to the house to conceal the crime.

The four victims were beaten to death with an iron bar, each suffering head injuries.

All four were found in the house at Kelvin Road, Clydach, by fire fighters called to deal with the blaze.

'Stark choice'

The prosecution case has focused on Mr Morris's gold chain, found at the scene - he admitted to owning the item despite originally denying it was his.

Barristers on both sides summed up their cases last week.

Peter Rouch QC, for the defence, claimed the police's case was "flawed and absurd".

He said the defence case against relied on substance, not spin.

Patrick Harrington QC, for the prosecution, told court that if the victims could speak from the grave their voices would say "Dai Morris did it".

On Wednesday, he told jurors they had a stark choice to make between Mr Morris and Alison Lewis, who was never charged.

Judge Mr Justice Butterfield will begin his own summing up of the case in advance of the jurors' retirement to consider their verdict.

His descriptions and directions are expected to last two days, while the jury could be sent out on Tuesday or Wednesday.