New evidence has come to light in the public realm over the 2007 murder of Corryn Rayney, including a cigarette butt, a watch and sand from Kings Park in both sides of a car driven by the murderer.

"It indicates there were two people were involved in the murder of Corryn," Post Newspapers editor-in-chief Bret Christian, who interviewed Corryn's husband Lloyd Rayney, told Simon Beaumont on 6PR Mornings.

The details were recently garnered by Mr Rayney, who stood trial over her death, because WA police are now obliged to give all information of their investigation to the defendant in a murder trial.

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