A person has died after two trucks crashed near Christchurch this morning.
Emergency services were called to the crash on Main South Rd in Templeton at 7.30am.
A police spokeswoman told the Herald the crash was a nose-to-tail.
Acting Inspector Paul Reeves said the road is expected to be closed for several hours and traffic is being diverted.
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The commercial vehicle investigation unit and the serious crash unit are investigating.
Christchurch Transport Operations Centre advisor Steven Mann said State Highway 1 near Templeton would be closed for about three hours.
"The detour route is via Jones Rd which is under stop/go control."
He said traffic congestion is heavy in the area, and motorists "need to be patient and take extra care".