"He was going to have a chill one in Raglan, see his family... turns out he didn't actually see anyone."
Korbin was last seen at his house on Sunday night.
The death will be referred to the Coroner.
The two-year-old was last seen in 1992.
Amber-Lee Cruickshank went missing 29 years ago, and police are now offering a $100k reward.
Amber-Lee Rose Cruickshank was last seen on October 17 1992.
The woman was an experienced mountaineer who had survived previous search and rescue operations.
Parengaope (Ope) O'Donnell hasn't been seen in more than two weeks.
The 68-year-old has not been seen since February 15.