The agency, which was scheduled to file its reply today, told special CBI judge O P Saini that it was not ready with the response and would file it within a day or two.
The court, after hearing the submissions advanced by CBI prosecutor, posted the matter for hearing on May 28 and asked the agency to file its reply soon.
The accused had also requested the court to take on record the written answers afresh.
He had said that during recording of his statement, which was deferred by the judge, all the questions were "explained properly" by the court and due to "some inadvertence" it was recorded in some questions that he was not able to understand some of the queries.
Also Read
However, Balwa had apologised to the judge, saying he had not done anything intentionally.
The stage for the recording of evidence of former Telecom Minister A Raja and 16 other co-accused, including DMK MP Kanimozhi, was set earlier when the court had supplied a draft questionnaire containing 1,718 questions running into 824 pages to the accused.
Besides Raja and Kanimozhi, former Telecom Secretary Siddharth Behura, Raja's erstwhile private secretary R K Chandolia, Balwa and Vinod Goenka, Unitech Ltd MD Sanjay Chandra, Reliance ADAG executives Gautam Doshi, Surendra Pipara and Hari Nair are facing trial in the case.
Besides these 14 accused, three telecom firms Swan Telecom Pvt Ltd, Reliance Telecom Ltd and Unitech Wireless (Tamil Nadu) Ltd are also facing trial in the case.