A 15-year-old girl has died after suffering an adverse reaction from a suspected "legal high", police said.
The girl was found unconscious in Bakers Park in Newton Abbot, Devon, in the early hours of Saturday,
She was taken to Torbay District Hospital at around 4.50am, where she later died.
Two other teenage girls were also taken to hospital as "a precaution".
A Devon and Cornwall Police spokesman said: "A scene guard is in place at Bakers Park as initial enquiries take place.
"Police currently believe that the 15-year-old girl who died had taken a new psychoactive substance, more commonly referred to as 'legal highs', and had suffered adverse reaction."
The family of the teenager have been told of her death.
Police have appealed for witnesses, including anyone who has any information about the incident or was in Bakers Park in the early hours of this morning, to come forward.