Dive squads have joined the search for missing North Shore woman Cissy Chen.
Chen has been missing since the evening of November 5 when she left her Torbay home and did not return.
Police investigating her disappearance have called in the National Police Dive Squad after on-going efforts to recover her body failed.
"Today, the dive team will be searching a number of possible areas on Auckland's north shore," said acting detective inspector Stan Brown.
"The Operation Waiau investigation team remain committed to locating Ms Chen so that she can be returned to her family, and we encourage any member of the public who has any information that may lead to her discovery to contact us urgently."