The search for a missing helicopter and its pilot, Michael Graeme Mehrtens, will resume today.
Mr Mehrtens, 35, was the only occupant of the Hughes 500 helicopter which is believed to have crashed into deep water near Breaksea Bay in Lake Sumner on Monday afternoon.
He was understood to have been spraying the area for gorse when the crash occurred.
Searchers have so far turned up only a small amount of debris and an oil slick in the hunt for Mr Mehrtens and the helicopter.
A full-scale search for the missing helicopter and pilot was to resume at daylight this morning, a police communications spokesman said.