By Jill Reilly and Helen Lawson PUBLISHED: 10:12 EST, 4 March 2013 | UPDATED: 15:26 EST, 4 March 2013 A mother and her three children have been killed after their car was buried by drifts after a weekend of heavy snow in Japan. At the weekend nine people were killed on Hokkaido island due to the poor weather including the family. Kazuyo Miyashita, 40, her two daughters Misa, 17, and Sayo, 14, and her son Daiki, 11, were trapped in their car during a snow storm. Trapped: Policemen shovel snow around a vehicle of Kazuyo Miyashita. The mother and her three children died at a hospital Saturday night of carbon-monoxide poisoning after the vehicle got buried in the snow
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Kazuyo Miyashita, 40, her two daughters Misa, 17, and Sayo, 14, and her son Daiki, 11, died at a hospital of carbon-monoxide poisoning
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Body of Mikio Okada found wrapped round his daughter, who survived
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The storm caused two-metre-high drifts
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Heavy snow that fell on the main northern Japanese island of Hokkaido
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Over the weekend nine people lost their lives to the storm
Eight people died in snow-related accidents in @placeholder over the weekend