Detectives from the Northern Beaches Police Area Command are conducting inquiries into the circumstances surrounding the death of the teenager, who was discovered unresponsive at a property on Sunday afternoon.
Emergency services were called to the scene, but the girl could not be revived. Police have not released further details about the location or the identity of the deceased, pending formal notification of next of kin.
The investigation is focused on the possibility that the death resulted from a non-fatal strangulation incident during a sexual encounter. Choking, also known as breath play or erotic asphyxiation, has been increasingly linked to serious injuries and fatalities, particularly among young people.
A report is being prepared for the Coroner. No charges have been laid at this stage, and police have not ruled out any potential criminal liability depending on the findings of the forensic examination and witness interviews.
The incident has reignited public discourse on the risks of sexual choking, which experts and advocacy groups warn is often misunderstood by teenagers and young adults. Campaigns have called for better education on consent and the dangers of restricting airflow, which can lead to brain damage or death within minutes.
The case is the latest in a series of tragedies involving young Australians, highlighting the urgent need for age-appropriate discussions about sexual safety.