CBI sources said businessman Ramesh Gandhi was nabbed by the agency sleuths in connection with the case.
Gandhi was allegedly acting in collusion with retired CBI Superintendent of Police J P Verma who was arrested by the agency last month.
Verma was arrested for allegedly receiving money through Gandhi to dilute a case against Milind Kumar Dey who is an accused in a CBI case for alleged bungling in grant of accreditation to law colleges in Bulandsher and Jaipur.
Dey was also arrested by the agency.
During searches at the office of Verma in Lajpat Nagar, the agency had seized Rs 50 lakh in cash and documents which showed several high profile people including politicians had visited the office of Verma to get their cases diluted, sources claimed.
The documents show that his "client list" included bureaucrats and politicians who were under probe by the agency, CBI sources alleged.
According to the CBI, Verma, who also worked as Deputy Commissioner in Civil Aviation Security, opened an aviation company in South Delhi after his retirement and had appointed some former agency officials as his consultants.
The sources alleged that the former officials were being used to influence their friends and colleagues in the CBI to dilute the cases against people who approached Verma's consultancy firm for help.
