But a breakthrough came in 1997 when new genetic finger printing techniques offered fresh hope.

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Glitches with a new finger-printing system meant that voting continued into Saturday in some parts of the country.

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They were one of the first animal research projects to use DNA finger-printing techniques in wild animals so as to understand the relationships within a pride.

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It said it had now found irregularities such as cases of over voting and instances when people not registered by the new biometric finger-printing system were able to vote.

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