The allegation against Sarkozy is two-fold: the money obtained from her took his campaign funds over legal limits and it was secured without her full knowledge or consent.
This latter claim was made by Bettencourt's former accountant, Claire Thibout, in 2010. She told police she'd handed envelopes stuffed with cash to Bettencourt's right-hand man, Patrice de Maistre, on the understanding it was to be passed to Sarkozy's campaign treasurer, Eric Woerth.
Maistre withdrew €4 million ($6.3 million) in cash from Bettencourt's Swiss bank account in seven instalments between 2007 and 2009. It's suspected some or all of it could have found its way to Sarkozy or his party.
Sarkozy, who lost immunity from prosecution after losing the presidential election to Socialist Francois Hollande in May, is facing a slew of legal inquiries including probes into opinion poll contracts, an illegal police investigation into journalists and alleged kickbacks on a Pakistani arms deal used to finance the right in 1995, when Sarkozy was Budget Minister.
- AAP