Former French president Nicolas Sarkozy is being questioned by judges investigating the finances of his failed 2012 re-election campaign.
Mr Sarkozy, a conservative who is positioning to run again next year, appeared before Paris judges investigating the invoice system between his party, then called UMP, and a company named Bygmalion allegedly used to conceal unauthorised overspending.
France had a campaign finance ceiling in 2012 of €22.5m. Mr Sarkozy is accused of overspending by €17m.
Several people close to Mr Sarkozy, including his former top adviser, already face preliminary charges in the case, one of several linked to the former president, who lost to Francois Hollande in 2012. He has already been fined €364,000 (£281,000) for overspending in the case.