Former Telecom Minister A Raja today said that he will appear before the CBI on Friday morning in connection with 2G spectrum allocation issue. He said, a request was made to the agency in this regard and they accepted it.Mr Raja, who arrived in the capital this evening told reporters in Chennai that he will cooperate with the investigating agency. The former telecom minister was issued summons on Monday along with corporate lobbyist Niira Radia to appear before the agency.The Supreme Court has asked CBI and the Enforcement Directorate to submit status reports on their investigations into the 2G scam to it by February 10, when the 2G spectrum case will come up for hearing. The Comptroller and Auditor General of India (CAG) in its report to Parliament had said that the allocation of 2G spectrum at undervalued prices had resulted in the loss of 1.76 lakh crore rupees to the exchequer.47-year-old Raja was forced to resign as Telecom minister in the wake of the government auditor's report. Radia was questioned by the CBI yesterday at her South Delhi farmhouse for four hours. Radia hit the spotlight after her taped telephonic conversations with various influential people including industrialists, politicians and journalists became public. Supreme Court is closely monitoring the multi-agency probe in the allocation of 2G spectrum to certain telecom firms.