Disturbing Facebook posts reveal the mother found dead near her infant son in their NSW home had allegedly been stalked by a person she knew.

Kristie Powell’s body was found at her Bellambi property, north of Wollongong, by a friend about 1.10am.

"She had a significant amount of blood on her and some injures," Detective Inspector Brad Ainsworth said.

The body of 39-year-old mother, Kristie Powell, has been found in a home at Bellambi, south of Sydney, near her unharmed five-month-old son. (Supplied)

(Facebook)

NSW Police today confirmed a friend of Ms Powell's located her outside of her bedroom, while her infant son was in another bedroom. (Supplied)

Police have established a crime scene at the home and are now hunting for the person responsible for her death. (9NEWS)

"She's a 39-year-old lady, she lives alone there with a five-month-old son. The little boy was in the bedroom. He was uninjured and unharmed."

Ms Powell, who worked from home as a dog sitter, revealed in a Facebook reply to a friend in March she had concerns about a person.

“He became obsessed with me and for some reason he is still obsessed,” the 39-year-old wrote.

The 39-year-old's death is being treated as suspicious, but no arrests have been made. (Supplied)

Emergency services who attended the scene found the woman's body with serious injuries. (9NEWS)

The five-month-old baby boy was taken to hospital as a precaution and is now in the care of his grandparents. (Supplied)

“He is mentally unwell and I have contacted police about him on a few occasions, but there is nothing they can really do as he is considered non-threatening.”

In the Facebook message, Ms Powell said the man wrote her messages, sometimes up to 100 a day, that say “Die Kristie Die”.

She claims he also referred to himself as the “Reaper”.

NSW Police also confirmed Ms Powell's body was found with 'a significant amount of blood on her'. (Supplied)

Detectives are now examining the scene and CCTV footage they believe may help in their investigations. (9NEWS)

Police say they never received any formal complaint from Ms Powell about the alleged stalking.

After the discovery of Ms Powell’s body, the infant was taken to hospital by emergency services and is now in the care of his grandparents.

The 39-year-old's death is being treated as suspicious and homicide detectives are investigating the incident, however no arrests have been made.

"We're looking for a perpetrator that's committed that crime," Det. Insp. Ainsworth said.

"Part of our investigation is, we're going to do our canvas - we've obtained some CCTV from nearby residents and businesses - we'll go through that."

Neighbours who woke to the news this morning told 9NEWS the discovery was shocking for the 'pretty quiet area'. (9NEWS)

(9NEWS)

A crime scene has been established at the home and forensics officers are examining the scene.

Neighbours who woke to the news this morning told 9NEWS of their shock at the discovery.

"We didn't know what happened," one resident said.