PARIS — Dominique Strauss-Kahn, the former managing director of the International Monetary Fund, was released on bail on Monday after he was charged with involvement in a prostitution ring in Lille. The filing of the preliminary charges allows for further investigation.
His lawyer, Richard Malka, has argued that Mr. Strauss-Kahn did not know that the women in question were prostitutes hired by his hosts, including for evenings in Washington and Paris, and that he did not pay them.
Eight people have been charged in the case, including a prominent lawyer, a police official in Lille and three executives of the Hotel Carlton there.
His lawyers will also be in court on Wednesday in New York for the first hearing in a civil case brought against him by Nafissatou Diallo, a hotel housekeeper who has accused him of sexually assaulting her.
Mr. Strauss-Kahn, who was once considered the leading Socialist contender to oppose President Nicolas Sarkozy in elections that begin next month, resigned from the I.M.F. after his arrest last May in New York City on attempted rape and other sexual assault charges.
The case was dismissed after prosecutors questioned his accuser’s reliability as a witness, but he eventually admitted that his encounter with her had been ”an error” and ”a moral failure.”
When he returned to France in August, he faced another investigation on sexual assault charges stemming from an encounter with a French writer, Tristane Banon, but officials chose not to prosecute him, citing a three-year statute of limitations in the case.