Libby must begin perjury prison sentence -judge

WASHINGTON, June 14 (Reuters) Former vice presidential aide Lewis ''Scooter'' Libby must begin serving his 2 1/2-year prison sentence while he appeals his perjury conviction, a US judge ruled today.

Libby, Vice President Dick Cheney's former chief of staff, was found guilty in March of obstructing an investigation into who blew the cover of a CIA analyst whose husband criticized the Iraq war.

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