Police are hunting a vehicle damaged after a hit-and-run in Christchurch on Saturday night which left a pedestrian in a serious condition.

The man was walking across Marlborough St in the suburb of Phillipstown at about 7.14pm on Saturday, July 11, when struck by a dark-coloured vehicle, police say.

Today, police have issued an appeal seeking anyone who may have seen the crash or a vehicle driving erratically in the area at the time.

"Due to the impact from the crash, the offending vehicle should have damage to the front left headlight area," a police statement says.

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The man received serious injuries.

Anyone who can assist is asked to contact Police on 105 and quote file number 200714/4658 or contact Crimestoppers anonymously on 0800 555 111.