The Delhi Police has received the report from a government forensic laboratory on the controversial CD which has the purported conversation between eminent lawyer Shanti Bhushan and political leaders Mulayam Singh and Amar Singh.

A senior police official said they have received the report from the Central Forensic Sciences Laboratory (CFSL) located at Lodhi Road but were yet to go through it.

The Delhi Police had on Monday given the CD to the lab for forensic analysis after Mr Shanti Bhushan provided them with a copy of it.

The police had earlier registered a case under Section 469 (forgery intended to cause disreputation) against unknown persons on a complaint filed by Mr Shanti Bhushan, who alleged that the CD was forged and intended to malign his reputation and derail the process of joint drafting committee on Lokpal Bill of which he is the co-chairman.

Mr Bhushan’s son and lawyer Mr Prashant had claimed that the disc was “doctored” using 2006 conversations of Mr Mulayam Singh Yadav and Mr Amar Singh and was intended to influence the judgments in 2G and Amar Singh tape cases besides derailing the joint committee proceedings.

He claimed that the forensic analysis done by US expert Mr George Papcun and the Hyderabad-based Truth Labs had shown that the CD has “multiple gaps and signs of electronic editing at very very critical places’’.

The purported telephone conversation between Mr Shanti Bhushan, Mr Yadav and Mr Singh showed attempts at influencing a judge.