A body has been found on the banks of the Ashley River during a training exercise for search and rescue staff, police say.
Senior Sergeant Paul Reeves, of Rangiora, said the body was found about 4pm.
A formal identification will now be carried out. The death has been referred to the Coroner, Reeves said.
The Ashley River was the scene of an extensive search in December after Rangiora woman Emma Beattie, 20, disappeared from her nearby Fernside home.
A police spokeswoman said they could not say if the body was believed to be that of Beattie.