A woman's body has been discovered in parkland at Avondale Heights in Melbourne's north-west.

It's unclear how the 64-year-old woman from Airport West died and police are waiting for the results of an autopsy to determine whether the death is suspicious.

Police at the scene in Avondale Heights where a woman's body was found. Credit:AAP

Police spent hours at the scene overnight and were assisted by the State Emergency Service, but the Homicide Squad did not attend.

The scene is at the southern end of North Road on a popular walking track near the Maribyrnong River and behind the Doutta Galla aged care home car park.