The Central Bureau of Investigation, CBI conducted searches at the office of Secretary to Delhi Chief Minister Arvind Kejriwal today morning. According to CBI sources, a corruption case has been registered against Rajendra Kumar, Secretary to the Delhi Chief Minister on the allegation that he misused his official position to favour a particular firm in getting tenders from various Delhi government departments. <br/><br/>After taking warrants, the agency initiated searches on the residential and the official premises of the Secretary at Delhi Secretariat. <br/><br/>Meanwhile, Delhi Chief Minister Arvind Kejriwal claimed that the CBI has raided his office and launched a no holds barred attack on Prime Minister Narendra Modi.