A man is critically injured after his onion truck rolled in Pukekohe on Attewell Road this evening, Friday 03 March 2017.
Emergency services have since freed the driver, who was classed as a status 2, improving to a status 3.
A police spokesman said diversions were in place around the crash, with Police cordons at Upper Queen and Cameron Road.
It is not yet known what caused the truck to roll.
Motorists are asked to avoid the area and to expect delays until further notice.