The court was hearing an appeal filed by the Kanimozhi against the HC order, which declined to dismiss petitions challenging her election from the Thoothukudi Lok Sabha constituency.
The inquiry committee comprises deputy general secretary Gauthama Sanna, organising secretary Neela Chandrakumar, state secretary (Labour Liberation Front) Kanalvizhi, and professors Sundaravalli and Semmalar.
The ATS will be constituted on the lines of Thunderbolt force in Kerala, Organisation for Counter Terrorism Operations (OCTOPUS) in Andhra Pradesh, and other similar ATS organisations.