PARIS — Christine Lagarde, the chief of the International Monetary Fund, was put under official investigation for negligence in a French corruption inquiry that dates back to her days as France's finance minister.
After a fourth round of questioning before magistrates Wednesday, Lagarde said she was returning to her work in Washington, and called the investigation "without basis." She is the third IMF managing director in a decade to face legal troubles.
Lagarde and her former chief of staff have faced questions about their role in an arbitration ruling that handed $531 million to a French businessman with a checkered past.
"After three years of proceedings, dozens of hours of questioning, the court found from the evidence that I committed no offense, and the only allegation is that I was not sufficiently vigilant," she said in a statement.