The CBI, the Apex probing agency investigated a number of cases in the last year. It was a mixed bag for CBI in 2009. The probe into the 14,000-crore rupees Satyam fraud, clean chit to Italian businessman Ottavio Quattrocchi in the Bofors payoff scam and a number of high- profile cases kept the country's premier investigating agency busy last year. The agency probing the alleged rape and murder of two women in Shopian in Jammu and Kashmir gave a clean chit to four police officials. CBI probe into the Satyam led to the arrest of its founder chairman B Ramalingam Raju who confessed to have cooked the company's account books . In a first of its kind incident, senior RAW officer A S Narayan Rao was arrested for allegedly taking a bribe . CBI asked Interpol to take off the name of Quattrocchi from the Red Corner notice list in which he had been put at India's behest.<br/>The CBI carried out a number of anti-corruption drives and arrested various Government officials, a majority of them were from Municipal Corporation of Delhi, Delhi Development Authority, Customs, AICTE and UGC, also a case against an IGP in the CRPF Constables recruitment scam . It arrested a member of Company Law Board . <br/>The CBI arrested Padamsinh Patil, a senior NCP leader and Lok Sabha MP, from Navi Mumbai in a murder case.<br/>It took 19 years for CBI to file a chargesheet against two Christian priests and a nun for the murder of Sister Abhaya in a Kerala convent at Kottayam.<br/>The apex probing agency sleuths arrested National Commission for Scheduled Castes, Chairman Buta Singh's son Sarobjit for allegedly demanding bribe of Rs one crore from a Nashik-based contractor . It also reconstituted its team of officials probing the sensational Aarushi-Hemraj double-murder case.<br/>The agency also filed a charge sheet against 19 people for allegedly carrying out nine serial blasts in Assam in 2008.<br/>The agency conducted searches at the offices of the Telecom Ministry probing the allegations of corruption in allocation of 2G spectrum .<br/>Abdul Kareem Telgi and eight others were convicted for printing and selling fake stamps.