Emergency services are in attendance at a crash on the South-Western Motorway where a van and trailer have rolled.
The incident took place around 12.40pm on the southbound lanes between the Hillsborough Rd and Queenstown Rd off-ramps.
Injuries are unknown at this stage however traffic is down to one lane due to the vehicle blocking lanes.
Motorists are warned that the incident is expected to cause a significant backlog of traffic and are advised to avoid the area if possible.
ENDS
Nick Baker/NZ Police