Police and WorkSafe NZ investigations are ongoing.
Seven police vehicles and several officers were at the site, a cul-de-sac in a busy industrial area, yesterday morning.
Detective Sergeant Colin Baillie said yesterday said initial scene examinations "indicate a worker has been squashed between a moving vehicle and a stationary vehicle".
"A scene examination has been completed and a number of people who witnessed the incident have been spoken to," Mr Baillie said.
Officers were examining a Hall's Refrigerated Transport truck and trailer, which appears to have been involved.
A spokeswoman for GVI Logistics yesterday said, "We've got no comment at this stage."