No third party involved in WA pair's death

The death of a man and woman in the backyard of a Perth home is a suspected murder-suicide, police have confirmed.

The bodies of the man and woman, both believed to be aged 50, were found at a house in Dianella on Sunday afternoon.

On Monday, police said there was no evidence to suggest any other person was involved in their death.

Major crime squad detectives continue to investigate the matter on behalf of the coroner.

Anyone with information is urged to contact police.

* Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or Suicide Call Back Service 1300 659 467.