One person is in a critical condition after a single vehicle crash on Pages Road, Wainoni around 6am.
Three other occupants of the vehicle initially left the scene but returned, and are now speaking with Police.
Police would like to emphasise the importance of remaining at the scene in the event of a crash, and ensuring that everyone involved is safe and receives appropriate medical attention.
Traffic is being diverted through Baffin Street and Ottawa Road while the Serious Crash Unit attends.
Issued by the Police Media Centre