The spokeswoman said the identity of the body could not be confirmed until a formal forensic examination, "and as such police has no further comment at this time".
The statement more than two hours after queries were put to police.
In March, a search and rescue operation was launched after Te Awamutu farmer Karl Earwaker, 39, went missing at sea.
Mr Earwaker's 5.6m fibreglass Sea Nymph, named Optimist, was found empty and capsized about two nautical miles south of Mayor Island on Tuesday March 21. Large-scale searches from air and sea were carried out but there has been no sign of him since.
On March 31, Maketu man Simon Oliver disappeared after his car crashed into the Kaituna River.
Despite police divers, Coastguard and other volunteers, the 53-year-old man also still has not been found.
Both searches were suspended.