Police in Sydney are investigating the death of a 16-year-old girl who died in hospital after being found unresponsive at a home. Authorities have not confirmed the cause of death.

The 16-year-old girl was found unresponsive on Sunday. Police are now investigating what led to her death.

The 16-year-old girl from the northern beaches was found unresponsive on Sunday. Police are now investigating what led to her death.