Former International Monetary Fund chief Dominique Strauss-Kahn, who is facing a probe into his alleged involvement with a prostitution ring in France, and his wife have separated, a source said.

Anne Sinclair, a wealthy heiress who recently relaunched her media career as a news editor at the Huffington Post’s French edition, and Strauss-Kahn separated about a month ago and they are living in separate residences in Paris, said the source, who is close to Strauss-Kahn.

The weekly magazine, Closer, earlier reported in its online edition that Anne Sinclair threw Strauss-Kahn out of their home in central Paris.

Strauss-Kahn is under investigation in France to establish whether he knew he was dealing with prostitutes and pimps when he attended sex parties in northern France, Paris and Washington in 2010 and 2011 allegedly organized by business acquaintances.

Public prosecutors last month widened the inquiry to include a possible gang rape charge after a prostitute told them Strauss-Kahn and friends had forced her to have sex in a group when she came to Washington to meet him in December 2010. DSK denies knowing that the women at the parties were prostitutes or that there was any violence.

His career at the head of the Washington-based IMF was cut short when he was arrested in New York in May 2011 on charges, which he denied and that have since been dropped, of attempting to rape a hotel maid. After criminal charges were abandoned, the maid, Nafissatou Diallo, pressed a civil case.

Strauss-Kahn, a former French finance minister, and Sinclair have been married for 20 years. She stuck close by him when he faced the rape accusations in NY