The Supreme Court on Wednesday directed CBI, Enforcement Directorate and Income Tax department to file a status report to update it on their probe in the 2G spectrum allocation case within three weeks.

The Court began hearing the plea of an NGO for investigating the alleged role of the then Finance Minister P Chidambaram in the 2G spectrum case.

The application filed by an NGO, Centre for Public Interest Litigation, submitted that a thorough investigation was required to probe the role of Chidambaram, who was the Finance Minister when spectrum was allocated to telecom companies during the tenure of former Telecom Minister A Raja in 2008.