The hikers were not breathing and their hearts had stopped, reports said. Final confirmation of death in Japan always comes via a medical examination.
About 250 people were trapped on the slopes, but most have got down safely.
The volcano, about 125 miles west of Tokyo, erupted suddenly on September 27, spewing ash and rocks.
Ordinarily it is a popular place to see autumn foliage.
As the search effort intensified earlier on September 28, officials said they were searching for 30 feared missing or buried by ash.
Military helicopters plucked seven people off the mountainside earlier on Sunday, the Associated Press reports, and workers on foot were also helping others make their way down.
Japan is one of the world’s most seismically active nations but there have been no fatalities from volcanic eruptions since 1991, when 43 people died at Mount Unzen in the south-west.
It’s not clear why there was no warning of Saturday’s eruption.
Japan monitors its volcanoes closely and any that show signs of activity are immediately closed to hikers – but this time that did not happen.
kVYbHXGwJqkMisleading allegations, rumours and outright lies about voting and fraud are flooding online spaces in…
At least 158 people have died in Spain's worst flooding disaster in generations. On October…
Google has been fined two undecillion (a two followed by 36 zeroes) roubles by a…
Embarking on a home remodel is an exciting journey, promising enhanced comfort, increased property value,…
The US presidential candidates continued to campaign across key swing states on October 20. Footage…
Elon Musk has said he will give away $1 million a day to a registered…