The coroner will investigate what killed Jean Sparksman.
The 89-year-old Hawke's Bay woman died on August 13.
Test results last night confirmed she had contracted campylobacter. A post-mortem examination revealed she also had other significant underlying health issues.
The coroner will investigate if camplyobacter contributed to her death.
Age Concern this week confirmed the woman had been living at Mary Doyle village in Havelock North. The retirement village declined to comment when Hawke's Bay Today contacted them.