CBI secured this data from the computer which was recovered from the house of Rehman's maternal aunt, who after his death on September 21 had deleted the letter, the CBI sources said.

They said the letter was retrieved at the forensic laboratory in which Rehman had stated the condition of his mind and non cooperation from the Todi family in allowing him to meet his wife, Priyanka, daughter of influential businessman Ashok Todi, a prime accused in the case.

With this letter, the CBI has started finalising its status report along with the charge sheet and was likely to book one of the kins of Priyanka and two police officials for allegedly abetment to suicide.

According to the CBI probe, a "close" relatives of Priyanka, with whom the victim had tied a nuptial knot, had allegedly used pressure tactics to drive Rehman to such a stage where he took the extreme step of committing suicide.

In October this year, the CBI had registered a case against Todi, and others under section 302 (murder) of Indian Penal Code.