A 58 year old man from Germany collapsed while taking part in a guided walk at the Franz Josef Glacier valley basin about midday today.
First aid was administered at the time and the man was flown by helicopter to the Franz Josef medical centre. Attempts to resuscitate him, both at the scene and at the medical centre were unsuccessful.
Police are unable to release the name until next of kin have been advised.
Cause of death is unknown at this stage but there are no suspicious circumstances.
Police are investigating on the behalf of the coroner.
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