An elderly man has been assaulted in his own home on Bamford St, Christchurch.
The attack took place at around 7pm on Sunday when the man heard a noise and entered the back door of his house.
A masked offender dressed in dark clothes attacked the 70-year-old, repeatedly hitting him in the head with a sharp object. The assailant then fled.
The victim was treated in Christchurch Hospital but has since been discharged.
Police are asking anyone with information to contact Christchurch Police on (03) 363 7400 or Crimestoppers anonymously on 0800 555 111.