US prosecutors have said the evidence collected in the case of former IMF chief Dominique Strauss-Kahn was "consistent with a non-consensual encounter" but decided to drop the charges of sexual assault because they could not prove it was forced and the woman told too many lies.
In the fullest official account yet of what happened on May 14, prosecutors said physical evidence does not conclusively prove allegations that the then International Monetary Fund (IMF) chief sexually assaulted Nafissatou Diallo, a 32-year-old Guinean immigrant working as a maid at the Manhattan Sofitel hotel.
The case then collapsed because the maid, whose testimony would be key, told repeated lies.
"Their cumulative effect would be devastating," prosecutors said in their 25-page motion asking the court to dismiss all charges.
What is sure is that a "quick sexual encounter" took place between Strauss-Kahn and Diallo, prosecutors said.
DNA testing "established that several stains located on the upper portion of the complainant's hotel uniform dress contained semen that yielded the defendant's DNA," the Manhattan District Attorney's Office said in the motion.
Evidence collected was "consistent with a non-consensual encounter," prosecutors said.
However, the DA's office said the physical evidence, while showing a sexual encounter, did not conclusively prove the maid's assertion that she was assaulted and forced to perform oral sex.
Diallo showed no injuries strongly indicating attempted rape and slight damage to her undergarments could have occurred from normal wear and tear, the motion said.
However, other factors, such as the hurried nature of the sex act that resulted in Strauss-Kahn's semen landing on the maid's clothing, pointed to a "forced encounter".
"The encounter between the complainant and the defendant was brief, suggesting that the sexual act was not likely a product of a consensual encounter," the motion said.