The Jayalalithaa government had on February 19 decided to set free all the seven convicts in the assassination case.
Santhan, Murugan and Arivu are currently lodged in the Central Prison, Vellore and they are in jail since 1991.
The other four are also undergoing life sentence for their role in Gandhi's assassination on May 21, 1991 in Sriperumbudur.
The bench had on February 20 issued notice to the Tamil Nadu government, Inspector General of Prisons, Chennai, Superintendent of Central Prison, Vellore and the convicts --V Sriharan alias Murugan, T Suthendraraja alias Santhan and A G Perarivalan alias Arivu--for March 6.