The CBI today carried out searches at the residences of corporate lobbyist Niira Radia and former Chairman of the Telecom Regulatory Authority of India Pradip Baijal and Mahesh Jain a private person in connection with the 2G spectrum scam. Raids have been carried out in over 30 places in Delhi and Tamil Nadu. CBI sources in Delhi told AIR that relevant documents are being sealed. Sources say that the raids are continuing at various places. AIR Chennai correspondent reports that at least three places in the city including the residence of a senior journalist were raided by the sleuths of the premier investigating agency.Last week, the CBI had carried out searches at the residences of former Telecom Minister A Raja in Delhi, Chennai and his village Velur besides conducting raids at the premises of a possible business associate and four other Telecom officials, including his personal secretary R K Chandolia, in connection with the 2G scam. Raids were also carried out at the houses of former Telecom Secretary Siddarth Behura, Chandolia, Member Telecom Commission K Sridhar and Deputy Director General in the Department of Telecom A K Srivastava.