The body of a woman has been found near a creek at the rear of a large apartment block in Sydney's west, police say.
A member of the public is believed to have found the body about 7.30am on Wednesday and phoned triple-0.
The woman is thought to have been aged in her 30s. It was reported earlier she was thought to have been aged in her 20s
Police have set up a crime scene at the property on Bridge Road, near the intersection with Wentworth Avenue, in Westmead.
Homicide squad detectives and local police have launched an investigation into her death.
A NSW Police spokesman said it was not immediately clear whether the woman had drowned, or whether her death was suspicious.
The police spokesman said no further information was available.
Police have spoken to a number of witnesses at the scene.
They are appealing for anyone with further information to call Crime Stoppers on 1800 333 000.