A person is dead after a horse riding incident in Omarama, 30 kilometres south of Twizel.
Emergency services were called to Airport Rd, near the Omarama Glider Airport, at 5.45pm today.
A rescue helicopter from Dunedin was also sent.
A police spokeswoman said they couldn't yet say the age or sex of the rider.
Fire and Emergency New Zealand were in attendance but could not comment further.