Following is the chronology of some developments related to the 2G spectrum case:

May 16, 2007: A. Raja appointed as Minister for Telecommunications for a second term.

October 25, 2007: The Centre rules out the possibility of auctioning 2G (second generation) spectrum for mobile services.

September—October 2008: 2G spectrum licences given to telecom firms.

November 15, 2008: The Central Vigilance Commission in its initial investigation report finds lapses and recommends action against certain Telecom Ministry officials.

October 21, 2009: CBI registers a case to probe 2G Spectrum case.

October 22, 2009: The CBI searches offices of the Department of Telecom in connection with the case.

October 17, 2010: Comptroller and Auditor General of India (CAG) indicts the DoT for multiple violations of policy in handing out second generation mobile phone licences.

November, 2010: Opposition rocks Parliament demanding ouster of Telecom Minister A. Raja.

November 14, 2010: Raja resigns.

November 15, 2010: HRD Minister Kapil Sibal gets additional charge of the Telecom Ministry.

November 2010: Parliament stalemate over the Opposition demand for a JPC probe into 2G spectrum allocation.

December 13, 2010 : DoT notifies the terms of reference of retired Supreme Court Justice Shivraj. V. Patil committee to look into the spectrum allocation procedures and policies. It is asked to submit its report to the Telecom Minister.

December 24 and 25, 2010: Raja questioned by CBI

January 31, 2011: Raja interrogated by CBI for third time

The one-man Patil Committee submits its report

February 2, 2011 : Raja, former Telecom Secretary Siddartha Behura and Raja’s former personal secretary R. K. Chandolia arrested by the CBI in connection with 2G spectrum case.

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