Baffled authorities are attempting to solve the mystery of a man believed to be Korean who washed up on a beach in Western Australia's Kimberley region.
Locals were left perplexed on Sunday when the man was found at the remote aboriginal community of Lombadina, about 250 kilometres north of Broome. 
He rocked up in small boat but it's unclear where he came from.
A Department of Immigration and Border Protection spokesman confirmed a person who identified himself as a South Korean national arrived on a small craft without valid arrival documentation.
He said operators of small craft were expected to report to the department prior to their arrival and unlawful non-citizens without valid documentation would be detained and were expected to depart Australia.
He said the department was investigating the matter.
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