An arrest has been made in connection with death of a teenage boy whose body was found in bushland in south-west Sydney.
The grim discovery was made in a remote area off Wilton Park Road at Wilton, half an hour outside Wollongong, about 7.25am on Saturday.
A 32-year-old man was arrested after presenting himself to Narellan Police station about 4pm Saturday.
Officers from Camden Police Area Command were earlier notified about the discovery following a concern for welfare, Nine News reports.
Officers set up a crime scene before detectives from the State Crime Homicide Squad arrived.
The shaken friends the boy was camping with spent Saturday afternoon giving statements to police.
No charges have yet been laid as police continue to investigate the incident, though they are treating the death as suspicious.
The 15-year-old has not been publicly identified. Police have notified the boys family about his death.
A man has been arrested over the death of a teenage boy whose body was found in bushland off Wilton Park Road at Wilton (pictured), in south-west Sydney on Saturday
Officers from Camden Police Area Command were earlier notified about the discovery and set up a crime scene before detectives from the State Crime Homicide Squad arrived (pictured police at the scene)
They boy, who is believed to be a local from the Picton area, was not known to police.
NSW Police Superintendent Tim Calaman said a group of about 12 teenagers had been camping in the area overnight.
He said police were investigating whether the people that were camping nearby may be involved in the boys death.
Police are speaking a number of witnesses and were canvassing the local area, premises, service stations, everything down there that may lead us to give us some an idea of whats actually happened, Superintendent Calaman said.
There would be evidence at the scene that indicates it happened in the area where this person has been located ... well have a clearer idea when that area has been processed.
We have a number of active lines of inquiry at the present time that were following up on ...
Suptd Calaman said it was too early to speculate how the boy died or if a weapon or a vehicle were involved in his death.
The forensic examination and ultimately the coroner will determine how the boy died, he said.
Police believe the incident occurred on Friday evening, but they were not notified until 7.35am the following morning.
There is nothing to indicate that there was an alarm raised last night, Suptd Calaman said.
Police are conducting an investigation into the death of the boy and they are also conducting several inquiries into what happened (pictured police at the scene)
Police have said its too early to speculate how the boy died or if a weapon or vehicle were involved in his death (pictured police and emergency services at the scene)
The superintendent said it was a tragic event and his thoughts were with the boys family.
The family and certain friends will be doing it tough this afternoon as they go through this process, he said.
We will continue to support them as we get to the bottom of what happened.
It is too early to speculate whether it was intentional or an accident [and] that will form the basis of the crime scene investigation.
Wilton Park Road has been closed as detectives from the State Crime Command an Homicide Squad continue to investigate the boys death.
Anyone who was in the area since 6pm on Friday, who has information or dashcam footage, has been urged to contact police or Crime Stoppers on 1800 333 000.