A person who was seriously injured in a rural Canterbury crash has died.

Emergency services were called to the two-vehicle crash on Maronan Rd, Tinwald, near Ashburton, about 6.10pm.

The road remains closed and diversions are in place, police said.

Police and two fire crews attended the crash, a Fire and Emergency spokesman said.

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There was no indication that anyone had been trapped, he said.

Motorists are asked to avoid the area if possible.