Major crime squad detectives have charged an elderly man after a 75-year-old woman was found dead on Monday night south of Perth.
Police and an ambulance were called to the property on Guerin Avenue in Piara Waters just before 6pm.
![Forensic officers at a house in Perth's south.](/web/20170321222104im_/http://www.watoday.com.au/content/dam/images/g/v/2/m/k/h/image.related.articleLeadwide.620x349.gv2mlx.png/1490089790636.jpg)
When they arrived they found the woman with life-threatening injuries and she died a short time later at the scene.
An 87-year-old man who is known to the woman was taken into custody.
On Tuesday, police said the 87-year-old had been charged with the woman's murder.
The man will appear at Armadale Magistrates Court on Wednesday.