A teenage girl has died after being found unresponsive at a house in Elanora Heights, an affluent suburb on Sydney's northern beaches, prompting police to launch an investigation into the circumstances of her death. The case is being treated as a matter of urgency by New South Wales Police, though full details of what led to the incident have not yet been made public.

The article, as supplied, does not include further specifics such as the girl's age, the exact timing of the discovery, or any details police have released about possible causes. It is understood the investigation is at an early stage, with police examining the scene at the property in Elanora Heights.