From wiki:
In January–February 2012 Kelly was investigated by the Manhattan District Attorney’s office upon an accusation of rape.[8] Kelly was never arrested nor charged with a crime.[9] After an investigation, the District Attorney issued a letter stating that under NY state criminal law, the incident did not constitute a crime.[10][11] Kelly returned to work February 13, 2012. On June 9, 2014, Kelly’s accuser spoke publicly for the first time about her 2012 allegations against Kelly.[12]