A car has hit a power pole just outside of Christchurch tonight in what police are describing as a serious crash.

The accident occurred about 9.20pm on Dunsandel and Brookside Rd in the town of Dunsandel - 40km west of Christchurch.

As of 10:30pm emergency services were still on the scene attending to at least one occupant.

There were no road blockages as a result of the crash.

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The Serious Crash Unit has been advised by police.