A cardboard processing factory in Hamilton remains under police guard after a body was found in a tightly packed bale of cardboard.
A police spokesman said the discovery of the dead man in a bale at OJI Fibre Solutions was being treated as an unexplained death.
Police havce secured the Frankton plant while the investigation continued.
The body has been taken to Auckland for a post-mortem examination this morning.
The man had not yet been identified.