WA homicide detectives are knocking on doors in Perth's northern suburbs in a bid to chase down leads on a decades-old murder.

<p>WA homicide detectives are knocking on doors in Perth's northern suburbs in a bid to chase down leads on a decades-old murder.</p>

Simon Beaumont will keep you up to date with all the latest breaking stories and issues in Perth.

<p>Simon Beaumont will keep you up to date with all the latest breaking stories and issues in Perth.</p>