Chances are high that the tomb of ancient Egypt's boy-king Tutankhamun has passages to a hidden chamber, which may be the lost last resting place of Queen Nefertiti, experts said on Saturday.

"There is, in fact, an empty space behind the wall based on radar, which is very accurate — there is no doubt," Japanese radar specialist Hirokatsu Watanabe said, his hand hovering over a fuzzy blue radar scan he said indicated the presence of a false wall. The size of the cavity is not known.

There is huge international interest in Nefertiti, who died in the 14th century B.C. and is thought to be Tutankhamun's stepmother. Confirmation of her final resting place would be the most remarkable Egyptian archaeological find this century.