The Central Bureau of Investigation (CBI) is at loggerheads with the Central Board of Direct Taxes (CBDT) over the probe into the Moin Qureshi Hawala case.

The CBDT has refused to share details regarding the probe with the CBI. The CBI had sought details after reports emerged that CBDT was investigating Qureshi's alleged links with former CBI Director AP Singh.

In April, CBDT had conducted raids at former CBI Director AP Singh's premises. The ex-CBI chief has also been asked to provide details of his properties, bank accounts, lockers and credit cards.

Singh is a member of Union Public Service Commission. He allegedly rented his apartment's basement to the meat exporter. The I-T sleuths will probe if he had received any benefits from him directly or indirectly.

The CBI had written to the CBTD Chairman last month in May in connection with the suspected tax evasion by Qureshi. In a letter to CBDT, CBI director Ranjit Sinha had also objected to leaks to the media of the case.

Sinha in a 'secret' letter to the CBDT Chairman, asked him to provide evidence, if any, against any CBI officer, present or former, so that the same could be analysed and action taken in accordance to the law, official sources said. CBDT has the administrative control over Income Tax department.

A Doon school alumnus, 57-year-old Qureshi has been under IT department lens for several months now for alleged tax evasion as the tax sleuths claimed that the turnover of his companies was 'under-reported'.

The IT department claimed to have 500 hours of telephonic transcripts of Qureshi even as reports surfaced about alleged links of a former CBI Director A P Singh with the meat exporter.

The tax sleuths had roped in Enforcement Directorate as well to probe alleged money laundering in the case by Qureshi, who had to resign as president of its old boys' society of Doon school recently after the controversy broke out.