It came after another double-fatal avalanche the day before at Niigata prefecture north of Nagano. A 48-year-old Japanese male snowboarder and a 35-year old man died after an avalanche hit an off-piste area of a ski resort, APF reports.
Police also said rescuers were searching for three Japanese in their 50s and 60s who went missing while mountaineering on skis in Nagano.
The Ministry of Foreign Affairs and Trade (Mfat) today said it was aware of reports of a New Zealander in the avalanche area.
"However, neither Mfat nor the embassy were approached for consular assistance in this instance," a spokeswoman said.