Homicide detectives brought in after woman's body found in Sydney bushland

Homicide detectives have been called in to investigate after a woman's body was found in bushland in Sydney's west on Sunday.

Shortly after 1pm, officers were called to a park on Irwin Street at Werrington, around 50 kilometres west of Sydney's CBD.

A passer-by had spotted the body from some distance away, roughly 50 metres off the road.

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When officers attended, they confirmed the discovery of what they believe to be the body of a middle-aged woman. No formal identification has yet been made.

The body was discovered partially undressed and face down among loose rubbish. Police suspect the body had been present there for a number of days.

Detective Superintendent Trent King addressed the media following the discovery, but said Homicide Squad detectives were assisting with the investigation.

"It appears as though that body has been there for quite a time without discovery," King said.

"At this stage I am informed it was a woman, potentially a middle-aged woman and that are still part of the investigation.

"I don't believe it was wrapped - there were items around the body - but not wrapped."

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Detectives from the Nepean region have begun an investigation, assisted by officers from the NSW Homicide Squad.

Officers have also begun searching the surrounding area, with the police helicopter also flying overhead.

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