ZURICH - North Korea's young leader Kim Jong-un spent more of his childhood being educated under a pseudonym in Switzerland than originally thought, Swiss newspapers reported on Sunday.

Jong-un first travelled to Switzerland in 1991, aged eight or nine, rather than in 1998 as has previously been established, Le Matin Dimanche and the SonntagsZeitung reported, citing official Swiss police documents.

Little is known about the leader of the reclusive communist state, who took over from the late Kim Jong-il last year, not even his exact age.

Local education director Ueli Studer told Reuters in December that a boy known as Pak Un, registered as the child of a North Korean embassy employee, had attended a school in Berne from 1998 until late 2000.

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