A person suffered life-threatening injuries in a crash on a main road through central Hamilton early this morning.
Police were called at 3.51am to a report a car had hit a tree on Cobham Drive.
St John was called minutes later, sending two ambulances and a rapid response unit. A person was treated at the scene and taken to Waikato Hospital in a critical condition, St John said.
Police have closed the northbound lane of Cobham Drive from Normandy Ave to Tristram Ave and diversions are in place.