The man accused of being the Claremont serial killer, Bradley Robert Edwards, appeared in court on Friday morning charged with murder, abduction and sexual assault.
The 48-year-old Kewdale man was arrested on Thursday and charged overnight with the abduction and murders of Jane Rimmer, 23, and Ciara Glennon, 27, in 1996 and 1997.
He has also been charged with the rape of a 17-year-old girl in Claremont in 1995, and the indecent assault of an 18-year-old woman in a Huntingdale home in 1988.
He has not been charged in relation to Sarah Spiers' suspected murder after she disappeared from a Claremont nightclub in 1996. Her body has never been found.
Mr Edwards' Kewdale home which he purchased in July 2000 - three years after Ms Glennon's body was found - was raided by police on Thursday morning, with several bags of evidence taken away.
He was charged with sex crimes over an alleged nine year period overnight.
He was 29 years old when Ms Rimmer and Ms Glennon were found dead.
It is understood he lives in his Kewdale home with his wife and adult daughter or step-daughter and is the former president of a Perth little athletics club and is understood to be an electrical engineer.
In 2013, Mr Edwards and his wife at the time were awarded life memberships at Kewdale Little Athletics Club and Mr Edwards has held several positions with the sporting faculty including president at the Belmont Little Athletics Centre in 2008.
He currently volunteers for the Belmont club as a timekeeper, photographer and website administrator.
WAtoday understands he works as an electrical engineer and may have previously held positions with Telstra, BHP Billiton and Rio Tinto Iron Ore.