Several people are feared dead after a boat carrying 70 asylum seekers reportedly crashed into cliffs on Christmas Island.

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The crash occurred about 6am local time near Flying Fish Cove, The West Australian reported, adding that early reports said there were at least 15 survivors.

Sky News reported that a Navy found about 60 people in the water and weather conditions were reported to be terrible, with the asylum seekers' boat being bashed up against rocks by massive waves.

A spokeswoman for Customs and Border Protection Command said she could not yet confirm the incident.