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The British Museum opens an exhibition on 1 July revealing the secrets of mummies, using modern technology to see inside the ancient cases.

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A medical CT scanner was used to take X-rays of the mummy Nesperennub, who lived around 800 BC.

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Three X-rays were taken to reveal what was inside the sealed case - it is believed to be a man who died in his 40s.

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Egyptologist Margaret Murray (1863-1963) led a team of scientists at the unwrapping of the mummy of the "Two brothers" at Manchester in 1908.

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The exhibition has been aided by computer specialists Silicon Graphics, which has previously worked on The Mummy Returns blockbuster.

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Mummies are rarely unravelled now so the 3D scans can advance research into the area. The exhibition runs until January 2005.