DNA and fibre evidence will form key components in the trial of the man accused of being the Claremont serial killer.

Bradley Robert Edwards has pleaded not guilty to the murders of Sarah Spiers, 18, Jane Rimmer, 23, and Ciara Glennon, 27, in 1996 and 1997.

Bradley Robert Edwards is accused of murdering Ciara Glennon, Sarah Spiers and Jane Rimmer (inset).

The 50-year-old has also denied raping a 17-year-old girl in Karrakatta Cemetery in 1995 and attacking an 18-year-old woman in her Huntingdale home in 1988.

Mr Edwards will go on trial in the Supreme Court of Western Australia for an estimated nine months from July 22, 2019.