Tainted Telecom Minister A Raja's close aide and former Telecom Secretary, Siddharth Behura was arrested by the Central Bureau of Investigation (CBI) on February 2 along with R K Chandolia and A Raja himself.
Siddharth Behura was Secretary, Department of Telecommunication (DoT) from January 1, 2008 to September 30, 2009.
It was Behura who signed the files leading to the allocation of 122 licences.
Behura had earlier said that he had merely implemented a decision taken by A Raja before he became the DoT Secretary, and so had no choice.
Behura's predecessor, D S Mathur, had refused to sign the files which had delayed the grant of the licences.
Mathur retired on December 31, 2007.