New Delhi: The CBI is planning to rope in officers with relevant finance background to speed up its probe into various financial scams.

Sources in the agency said the need for financial experts was felt after officers, investigating various scams including 2G, faced certain hurdles in ascertaining the quantum of fraud and exposing other financial irregularities.

They said the matter was further discussed with the Department of Personnel and Training (DoPT) to explore possibilities of engaging officers of Indian Revenue Service (both of Customs and Income Tax cadre) on deputation or on probe basis.

The DoPT is understood to have granted its "in-principle" approval to the CBI and search is on to induct some of the officers on temporary basis.

"The officers were facing problems in tackling certain financial matters. There was a lack of domain knowledge in detecting anomalies in share holding pattern and in audit books. That is why we decided to induct some of the IRS officers on deputation," a source, privy to the matter, said.

The source said that officers from Indian Audits and Accounts Service (IAAS) could also be given place in the agency on deputation basis.

The agency usually takes help from officers working in Banking Securities and Fraud Cell (BS&FC) and Economic Offence Wing (EOW) in dealing with cases of financial fraud.

According to sources, since the sleuths working in EOW and BS&FC are occupied with others cases, the CBI brass gave the go-ahead to engage IRS officers on temporary basis.

Some of the crucial cases being probed by the CBI include irregularities in the allocation of second generation (2G) spectrum to telecom companies and other bank fraud cases.

According to sources, the agency may engage at least three IRS officials within a month's time.

"The CBI conducts regular programmes for its officers, who often come on deputation to the agency, to upgrade skills and make them aware of the latest technologies at its academy in Ghaziabad. It also calls experts of various fields to conduct workshops for its officers.

"But, since the probe in some of the regular cases have to be completed in a stipulated time frame, the agency decided to have IRS officers," the source said.

Recently, the Supreme Court had asked the CVC to give the status report on the 2G case on the basis of investigations being carried out by the CBI, Enforcement Directorate and Income Tax department.

"The department will look into such (induction of IRS officer) request by the CBI once it is formally received," a senior DoPT officer said.

According to latest data, 924 posts at the level of Special/Additional Director, Joint Director, Deputy Inspector General, Superintendent of Police, Deputy Superintendent of Police, Inspector and Sub Inspector, among others, are lying vacant in the CBI.

Besides, about 954 cases were under investigation till August 2011, the data said.