A person is in a serious condition after two trucks collided and a gas cylinder exploded in Greta Valley, North Canterbury.
Photo: RNZ / Alexander Robertson
Police said the crash on Greta Road shortly after 9am caused one truck to roll.
The injured person was airlifted to Christchurch Hospital, and had earlier been in a critical condition.
The Transport Agency says State Highway 1 at the intersection with Scargill Valley Road had been closed and traffic was being diverted.
