Former Telecom Minister A Raja has been arrested by the CBI in the 2G Spectrum case. CBI sources said former Telecom Secretary Siddartha Behura and his former personal secretary R K Chandolia have also been arrested. Earlier today Raja was questioned by the investigating agency for the fourth time in connection with the case. CBI sources said that he was also asked about his conversations with corporate lobbyist Nira Radia and the reasons of advancing the cut-off date of allocation of the spectrum in 2007. The Supreme Court had also asked CBI and Enforcement Directorate to submit status reports on their investigations into the 2G spectrum case to it by February 10 when the case will come up for further hearing.Congress says, Raja's arrest shows that law is taking its own course. AICC General Secretary Janardhan Dwivedi told reporters that the development will not have any bearing on the relations between the Congress and DMK. BJP on the other hand dubbed the arrest of Raja as too little too late and demanded that others involved in the scam should also be brought to book. BJP spokesperson Rajiv Pratap Rudy said that Raja's arrest was just beginning of an exercise.