Christchurch police are now treating the death of a woman in her 60s in the Christchurch suburb of Woolston as a homicide.
Detective Senior Sergeant Nicola Reeves said police are continuing to examine a property in Walcot Street where the woman's body was found on Monday evening.
A post-mortem has been carried out.
Reeves said police are making inquiries into how the woman died.
They do not intend releasing her name at present.