A spokesman for Northern Constabulary has said that the three people airlifted to hospital are "believed to be in a serious condition".
He added that two groups of six people had been in the area at the time of the avalanche, and have now been "walked off" the hill.
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Molly, a 10-year-old Jack Russell was found by police 200 miles from her home.
Unusually windy for the time of year with gales and big waves battering western coastlines.
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