Police have arrested a man after an 18-year-old and their family member disturbing an intruder in their Christchurch home were assaulted.
A 31-year-old man was arrested and faces charges including aggravated burglary and assault following the incident, which occurred at an Opawa address about 3.30am on Sunday.
Returning home, the 18-year-old disturbed an intruder and was seriously assaulted.
A family member who came to help was also assaulted before the intruder fled.
Police believe the family member's intervention stopped any further injuries to the 18-year-old.
Both victims required hospital treatment.
The 31-year-old male is due to appear in the Christchurch District Court tomorrow.