Police are advising motorists to avoid the Haast Pass Highway on the West Coast as the clean-up of a fuel tanker crash is expected to take most of the day.
The oil tanker crashed on SH6, the Haast Pass Highway, in Mount Aspiring National Park.
Emergency services were notified at 7.53am that a truck, which was heading to Wanaka, had rolled and was blocking the road, between Haast Pass-Makaroa Rd and Marks Rd.
"Initial reports from the scene are that there are no injuries and the fuel within the tanker is contained," said a police spokesman.