New Delhi, March 26 : The Central Bureau of Investigation on Thursday revealed that it was probing the origin of a "false, fabricated and forged" report which stated that the Samajwadi Party leader Mulayam Singh Yadav had been "framed" in a disproportionate assets case.

CBI Director Ashwani Kumar said the agency would investigate the origin of the "report", which was claimed to be an internal report of the agency, and as to how it reached the media.

It (CBI) would file its views before the Supreme Court once the agency''s investigation is over, Kumar said.

"In some newspapers and news channels such documents have come which we feel are not right. They are false, fabricated and forged. We are investigating to find out who gave, how did it reach the media and by whom was it forged. This is being probed and the report will be presented in the Supreme Court," the CBI Director told reporters in the Capital.

In February, some news reports had claimed that the agency, in an internal note, had already prepared the ground for burying the politically sensitive assets case against Mulayam, by admitting in effect that it was a frame-up.

The reports had quoted an alleged 17-page document prepared by CBI''s Deputy Inspector General Tillottama Varma claiming that no case of disproportionate assets was made out against the former UP Chief Minister, a contention which was denied by the CBI immediately. (ANI)