Clayton said the police investigation continued and investigators were still working to establish what exactly happened to Bridget.
"Police are aware that there are a number of individuals who know the circumstances around Bridget's death and hold information that could be vital to the investigation," he said.
"We urge these people to do the right thing and contact police."
A 57-year-old Northland man appeared in the Whangārei District Court before Judge Brandt Shortland, who granted the man interim name suppression last Friday.
He faced a charge of possession of cannabis on June 9 and a second charge of wounding a woman with intent to cause grievous bodily harm on February 14, 2019.
Police said no further charges have been laid at this stage, but further charges are likely.
Anyone with information is urged to call the investigation team on 09 430 4555 and all calls to this number will be treated in confidence.