"He could easily not have known, because as you can imagine, at these kinds of parties you're not always dressed, and I challenge you to distinguish a naked prostitute from any other naked woman," Henri Leclerc told French radio Europe 1 in December, the Associated Press reported
While sleeping with prostitutes is legal in France, the BBC reports
, provided they are over 18, French media reports say Mr Strauss-Kahn could be charged with being complicit in procuring prostitutes, which is illegal.
Strauss-Kahn has denied complicity in prostitution.
Strauss-Kahn was held overnight on Tuesday for a second day of questioning by police officials in the northern French city of Lille probing a suspected prostitution ring in France and neighboring Belgium that has implicated police and other officials.
According to the New York Times
, French law allows a person to be detained for questioning without charge for 24 hours, with a possible extension to 48 hours.
Last May, Strauss-Kahn made international headlines when he resigned as the managing director of the International Monetary Fund after being charged with raping a New York hotel maid, alleging that he forced her to perform oral sex.
But then charges were dropped after prosecutors questioned his accuser’s credibility as a witness saying the maid's testimony was unreliable.
Strauss-Kahn eventually admitted that his encounter with her had been “an error” and “a moral failure but definitely not violent.
He still faces a civil suit in New York, by the former maid, Nafissatou Diallo.
Strauss-Kahn, 62, has been married to journalist Anne Sinclair for two decades.