The CBI today urged a special MCOCA court in Mumbai to issue a direction to deported gangster Chhota Rajan to give his voice samples for probe in connection with 2011 J Dey murder case.

"First he (Rajan) gave his consent (for the voice test) but later he refused to undergo the same," CBI prosecutor Bharat Badami told the court after the fugitive was produced before it via video-link from Tihar jail. On the CBI plea, Special Judge S S Adkar asked Rajan's advocate Anshuman Sinha to file a reply. The matter is likely to come up for hearing on February 11.

CBI told the court that an audio CD containing telephonic conversation between Rajan and a person has been deposited in the court by Mumbai Police and they want to compare the voice in the CD with that of Rajan. Badami also sought more time for investigation into the murder, saying that they need to take help of some external agencies like Interpol to probe the case against Rajan as he was out of country for long following which its prayer was granted.