Police say a 17-year-old girl who died at a park in Christchurch yesterday may have been "huffing" butane.
Detective Sergeant Craig Farrant said police were called to the park in upper Riccarton about 4.40pm.
Attempts to resuscitate the girl by members of the public and ambulance staff were unsuccessful.
"Initial inquires indicate that a small group of females were inhaling butane gas, commonly known as 'huffing', in the area prior to this incident," Mr Farrant said.
Police were not seeking anyone else over the death, which would be referred to the coroner.