A crime scene was established at a popular campsite near Glenbrook after a woman's body was discovered inside a tent on Sunday.
Emergency services arrived at Euroka campground in the national park about 11.30am.
After the woman, believed to be in her twenties, failed to leave her tent for at least two days, a fellow camper became concerned for the woman's welfare and contacted police.
"It's our understanding that she entered the national park and arrived around midday on Friday to camp," a police spokesman said.
"We were advised by a member of the public who was concerned that no one had left the tent.
"The person approached the tent and then contacted us," the spokesman said.
Police initially treated the situation as a rescue operation, however it became clear that the woman had died and could not be revived.
A vehicle, believed to belong to the deceased woman, was located in the carpark nearby.
Officers from the Blue Mountains Local Area Command were investigating the circumstances surrounding the woman's death. They were not treating the woman's death as suspicious.
Accident in rain
A two-car accident occurred on Friday at about 9.30am in heavy rain and foggy conditions on the Great Western Highway at Wentworth Falls near Tablelands Road.
Traffic westbound was heavy after what witnesses described as a two-car T-bone accident. Blue Mountains Police confirmed that two people were transported to Nepean Hospital in a stable condition. The driver of one vehicle was trapped for a short time requiring the the removal of a door.
Hit by own car
A 21-year-old woman was run over by her own car in Yarramundi last Thursday morning. Emergency services were called to a property on Heron Place at around 8am. The woman suffered minor injuries and was transported to hospital by road ambulance. Police were investigating how the incident occurred.
Credit card fraud
On Monday, May 15, a 50-year-old Katoomba man reported a stolen credit card.
Due to the nature of his normal card use, the victim was unaware of its absence for several weeks, and upon checking his statement located an extensive list of transactions carried out fraudulently.
Police later charged an 18-year-old Wentworth Falls man with multiple fraud offences, attempt robbery and supply prohibited drugs. He will appear in court in July.