Nicolas Sarkozy's become the first French ex-president to go to jail.
He's started a five-year sentence for conspiring to fund his election campaign with money from late Libyan dictator Muammar Gaddafi.
Sarkozy, who was president from 2007-2012, has appealed against his jail term at La Santé prison, where he will occupy a small cell in its isolation wing.
UK/Europe Correspondent Gavin Grey has the latest.

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