The case of the horror video from Manipur -- which showed two women being paraded naked by a mob -- will be investigated by the Central Bureau of Investigation, the Centre said in an affidavit filed in the Supreme Court. The Union Home Ministry has referred the case to the CBI days after it evoked nationwide outrage and sparked a huge political face-off with the united opposition. Sources said the government also wants to run the trial outside the northeastern state, which has been witnessing violence for the last three months.