At least one person is dead and six others are missing in Japan as parts of that country deal with record rainfall and the resulting catastrophic flooding, officials warned on Saturday.

One person was killed and at least seven were missing on Saturday, officials said, as "unprecedented" rains triggered floods and landslides in Japan's quake-hit region of Ishikawa, where authorities told tens of thousands to evacuate.

At least one person was killed and several others missing after torrential rains caused flooding in a northern Japan coastal region still recovering from a deadly earthquake that struck at the start of this year.