The 37-year-old was reported missing on December 23, 2021 after last being seen at his mother’s home in Waimate.
She had died only hours before Moana’s disappearance.
In a statement last month, Detective Inspector Joel Syme said police had carried out an extensive search for the body of Moana, including searches of waterways in the Waitaki and Waimate areas by the police dive squad.
While the search for Moana’s body continued, Syme said he was pleased people were before the courts over his death.
“We hope that having two people charged with Anaru’s death will give some comfort to the whānau, however, we know how important locating their loved one is, so this will remain a priority,” he said.