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Claremont Serial Killings: Court Hears Bradley Robert Edwards Police Interview

The video of the accused Claremont serial killer's police interview is on the agenda at the former Telstra technician's epic Supreme Court of Western Australia trial, marking the end of the prosecution case.

The accused, Bradley Robert Edwards, swore, expressed disbelief and proclaimed his innocence after heavily armed police stormed his home in an early morning raid and detectives put him under arrest.

Video of Edwards hearing the allegations against him for the first time, three days before Christmas in 2016, was played at trial on Tuesday.

The 51-year-old exclaimed "f***" as Detective Senior Sergeant Joseph Marrapodi told him he was suspected of murdering secretary Sarah Spiers, childcare worker Jane Rimmer and solicitor Ciara Glennon in 1996 and 1997.

He used the same expletive when told he was also going to be charged with abducting and raping a teenager in a cemetery in 1995 - which he admitted the month before his trial started in November.

Edwards asked "who?" when he was further accused of attacking a woman in her Huntingdale home in 1988, which he also confessed to last year.

"You've got to be joking," he told detectives when he was read his rights.

"I understand, I'm just trying to process what's going on."

Bradley Robert Edwards. Image: AAP

Edwards did not ask for a lawyer but said he wanted to call his parents, which was denied as inquiries were ongoing.

When prompted to ask questions, he said: "Why me? I'm innocent."

The raid occurred about 7.30am, his interview at cold case homicide squad headquarters started about two hours later and concluded about 11.30pm, but he was given multiple breaks.

The video has been edited to a much shorter length and marks the end of the prosecution case, which started with testimony from more than 100 civilian witnesses, including his two ex-wives, former work colleagues and friends.

The trial has this year been dominated by DNA and fibre evidence.

The state says fibres from Edwards' work trousers and Telstra-issued car were found on the rape victim, Rimmer and Glennon.

The remains of Spiers have never been found.

The victims of the Claremont murders (L-R) Jane Rimmer, 23, Ciara Glennon, 27, and Sarah Spiers, 18. Image: AAP

Prosecutors also allege Edwards' DNA was found on a kimono he left behind at the Huntingdale house and underneath Glennon's fingernails, some of which broke off as she fought her attacker.

The defence team has argued the evidence could have been contaminated and is expected to call at least one expert witness.

It is not yet known if Edwards, 51, will take the stand himself.

There will be a five-week adjournment between the conclusion of the defence case and closing addresses.

Justice Stephen Hall is expected to take several months to hand down his verdict.