The search for a Dutch tourist and the pilot of a microlight aircraft that crashed on a sightseeing flight over New Zealand's Abel Tasman National Park resumed on Tuesday.
A wing of the plane was spotted from the air on Monday afternoon after it failed to return to Motueka on schedule, but a search of dense bush in the 22,530 hectare park found no trace of the couple.
The area where the plane is believed to have crashed is extremely rugged with deep gorges, a spokesman for the search operation told Radio New Zealand.
An air force helicopter was called in to drop more searchers into the park, dpa reported.