The application filed by advocate Ajay Agrawal also sought detailed information on why the government withdrew its appeal from the Argentinian Supreme Court, enabling the Italian businessman to leave the country.

Quattrocchi, 69, was detained on February 6 Argentina on the basis of a Red Corner notice and was released on bail on February 23. CBI's plea to extradite him was rejected by the El Dorado Court against which the appeal was filed in the Argentinian Supreme Court.

Agrawal, who earlier had moved the apex court against the defreezing of Quattrocchi's bank account in London [Images], alleged that government "deliberately" failed in extraditing the Italian businessman from Argentina.

The advocate sought disclosure of confidential material, including opinions of CBI and law officers of the Centre which allegedly facilitated the defeat of India's request for extraditing Quattrocchi.

He claimed that Indian authorities concealed from El Dorado Court of Argentina that the Supreme Court here has already admitted a petition challenging the Delhi High Court verdict quashing charges against other accused in the case.

Agrawal had filed the appeal against the May 31, 2005 judgement of the High Court after CBI had failed to approach the apex court in mandatory 90 days period.