A man is in a serious condition in hospital, following a one-punch attack in the Christchurch's nightlife precinct overnight

Emergency services were called to Oxford Terrace at around 2.30am.

The victim was initially critical, but is now in a serious but stable condition in Christchurch Hospital.

Police say a 27-year-old man was arrested in a nearby street, and has been charged with injuring with intent to cause grievous bodily harm.

He'll face court today.