Both southbound lanes on the Christchurch Northern Motorway are blocked following a serious crash this morning.
Police were called to the multi-vehicle crash, between Ohaka Road and Tram Road, at around 10:40am.
Initial indicators are that people are injured.
Diversions are in place at the Ohaka Road on-ramp, and the road is expected to be blocked for some time.
Motorists are advised to avoid the area, and to expect delays.
ENDS