By Chine Labbé
PARIS (Reuters) - IMF chief Christine Lagarde was questioned in court by French magistrates on Thursday over her role in a 285-million-euro ($366 million) arbitration payment made to a supporter of former president Nicolas Sarkozy.
Lagarde, in court the entire day, risks being placed under formal investigation when the hearing wraps up on Friday for her 2007 decision as Sarkozy's finance minister to use arbitration to settle a court battle between the state and businessman Bernard Tapie.
Under French law, that step would mean there exists "serious or consistent evidence" pointing to probable implication of a suspect in a crime. It is one step closer to trial but a number of such investigations have been dropped without trial.
Such a move could prove uncomfortable for the International Monetary Fund, whose former head, Frenchman Dominique Strauss-Kahn, quit in 2011 over a sex assault scandal, and for a woman rated the most influential in France by Slate magazine.
In Washington, the IMF reaffirmed its confidence in her.
"The board has been briefed on the matter a few times, including recently, and continues to express its confidence in the managing director's ability to effectively carry out her duties," IMF spokesman Gerry Rice said.
Lagarde smiled and waved at reporters crowded outside the court as she arrived in the morning and as she left at 9 p.m. (1900 GMT), some 13 hours later, with a breezy: "See you tomorrow."
Her lawyer made no comment on the day's proceedings. The decision on whether to place her under investigation or give her "supervised witness" status will be announced at the end of the hearing on Friday.
The case goes back to 1993 when Tapie, a colorful and often controversial character in the French business and sports world, sued the state for compensation after selling his stake in sports company Adidas to then state-owned bank Credit Lyonnais.
A one-time Socialist minister who later supported the conservative Sarkozy, Tapie said the bank had defrauded him after it resold the stake for a much higher sum. Credit Lyonnais, now part of Credit Agricole, has denied wrongdoing.
Lagarde is not accused of financially profiting herself from the payout and has denied doing anything wrong by opting for an arbitration process that enriched Tapie. With interest, the award amounted to 403 million euros.
However, a court specializing in cases involving ministers is targeting her for complicity in the misuse of funds because she overruled advisers to seek the settlement.
Her lawyer, Yves Repiquet, has told French media Lagarde merely approved the use of an arbitration procedure that had been decided by the state-owned holding company, Consortium de Realisation, set up to take over the debts and liabilities of Credit Lyonnais when it fell into difficulty in the early 1990s.
Sources close to the IMF board have said they are not worried by the affair and are confident Lagarde herself did not profit from it. But they added the board might review its position if judicial procedures took her away from her duties.
French government spokeswoman Najat Vallaud-Belkacem said she supposed Lagarde would be asked to quit her post if put under investigation.
"Objectively, knowing the IMF and the way these institutions work, I would tend to think that if she were placed under investigation she would probably be asked to step down," she told BFM television.
Tapie said on Thursday he was "delighted" the affair was being investigated. While earlier probes had found his settlement to be perfectly legal, further examination would show how justified he had been in seeking compensation, he said.
"If there had been anything untoward in the arbitration it would have come out a long time ago," he told Europe 1 radio, adding: "None of these legal cases are to see if I am dishonest, they are to find out how much I was robbed of."
Lagarde, who has worked to move the IMF on from the Strauss-Kahn scandal, has taken a firm yet pragmatic stance in the austerity-versus-growth debate as Europe struggles to pull itself out of a long economic slump.
Appointed in part for the negotiating skills she used in brokering Europe's response to the 2008/09 global financial crisis, she has shown firmness in insisting on the need for nations to stick to budgetary rigor when possible.
Current Finance Minister Pierre Moscovici told Le Monde newspaper Lagarde retained the support of the French government, but said that it would appeal against the arbitration award if she was placed under formal investigation.
(Writing by Catherine Bremer; Editing by Sonya Hepinstall and Robin Pomeroy)