Police remain at the scene of a two-vehicle collision at the intersection of Leaches Road and Rakaia Gorge Road in Windwhistle, Selwyn.

A police spokesperson says emergency services were alerted to the crash just before 1.30pm.

Two people have received serious injuries and have been transported to hospital by helicopter.

A scene examination is underway.

Motorcycle crash

Meanwhile, Emergency services are at the scene of a motorcycle crash on Hundalee Road (SH1).

They received the call about 3.35pm, and police say there are no serious injuries.