A DNA sample taken from Dominique Strauss-Kahn, the former IMF chief accused of sexually assaulting a hotel maid, has been matched to material found on the maid's shirt, sources familiar with the case tell NBC New York. The 32-year-old Sofitel maid has told police that Strauss-Kahn groped her, locked her in a bedroom and forced her to perform oral sex. Sources familiar with the case say material on her shirt matched Strauss-Kahn's DNA. Another source says DNA testing on other evidence from the scene is continuing. Prosecutors on Thursday announced a grand jury indictment; the seven counts include attempted rape,...