Japan snowfall disrupts air, rail and road transport
A severe snow storm warning has been issued in the Japanese capital, Tokyo, with residents urged to stay indoors.
Correspondents say it is the first such warning for the city in 13 years.
Hundreds of flights have been cancelled, roads closed and some train services suspended.
Local media has reported that at least 43 people have been injured because of snow-related accidents, with as much as 4cm (1.6in) of snow recorded on Saturday morning in Tokyo.
Weather forecasters have warned that with a rapidly developing low pressure front heading towards eastern Japan, more snow can be expected.
Last year parts of northern Japan had as much as 5.5m (18ft) of snow - a record-breaking amount that caused buildings to collapse under its immense weight.