Police have identified the 87-year-old man whose death is the subject of a murder investigation.
Harold Richardson was found dead in his Upper Riccarton home on Sunday.
A post mortem has been completed and the next of kin have been advised, Detective Inspector Tony Hill said.
There are currently 18 police involved in the investigation.
"Police and forensic experts are completing an examination of Mr Richardson's address, and will likely be there for several more days.
"Examination of another address of interest to the inquiry has been completed."
A teenager was charged with the murder of the man on Sunday after his body was found with unexplained injuries.
Police were called to the Owens Tce address at 9.30am on August 2 and found the man, the owner and occupier of the house, dead inside.
Mr Hill said at the time the teenager was known to the victim.
Police staff were conducting inquiries in the area for sightings of Mr Richardson, or other "movements of interest", at the weekend.
Anyone with information can contact Christchurch Police on 03 3637400 or confidentially through Crimestoppers on 0800 555 111.
