Homicide investigation underway after woman found dead in her Banksia Grove, Perth home

A woman has died in her Perth home under suspicious circumstances, leading to a murder investigation.

WA Police were called to a home on Mayali Bend in Banksia Grove, in the city's north, about 9am on Thursday.

It's understood someone inside the home made a triple-zero call after finding the woman 'unresponsive'.

Paramedics attempted to treat the 42-year-old woman.

However, she died at the scene.

Police said a man in his 40s is assisting officers with their investigation.

It's understood homicide detectives are also involved. 

The man and woman were known to each other.

Homicide cops are investigating a 42-year-old woman's death in her Perth home (stock image)

Homicide cops are investigating a 42-year-old woman's death in her Perth home (stock image)