The bank and telephone records of a missing British tramper are being examined by police, as poor weather continued to hamper efforts to find him.
Andrew Ian Wyatt, 41, was last seen leaving Blue Lake Hut in Nelson Lakes National Park on December 15.
Search and rescue attempts have been hindered in the past couple of days, as strong winds sweep across the region.
Today search teams are preparing to enter the Blue Lake area to continue their efforts, having been prevented from reaching the beauty spot earlier today and yesterday.
It is hoped ground search teams will be flown into the Blue Lake area first thing tomorrow.