Clive was last seen on March 9.
She was reported missing on Saturday, March 23.
"Unfortunately, the man has not yet been located and police are providing support to his family."
The diver was reported missing from a vessel off the coast shortly after 1:30pm.
"We still have no news. Nothing. Just speculation. A nightmare. We want to wake up."
William, 17, was last seen on February 19.
The man, in his 70s, had been missing since Monday.
Twenty-three-year-old Cortney has been reported missing.
Papanui Point has been described as "a location known to claim lives".
