new delhi delhi police has collected the voice sample of aaftab poonawala accused of murdering his livein partner shraddha walkar and chopping her body into several pieces and will now match it with an audio call recording recovered during investigation the police were also mulling a facial recognition test on aaftab sources said on monday the face id test may be conducted to confirm that the suspect seen in the cctv footage recovered by the police was aaftab aaftab could take the plea in court that the man seen venturing on the streets at night in mehrauli was not him an official addedthe audio recording meanwhile is of an alleged telephonic argument between shraddha and aaftab and the latter could be heard threatening shraddha during the conversation a source said the recording was found on aaftabs phone the content of which was retrieved by forensic officialsthe voice sample match will help police say with certainty if aaftab had a history of threatening shraddhaon december 20 the police had moved an application for collection of his voice sample aaftab had refused to give his samples and told the court that he did not consent to the polices plea the court had however refused aaftabs plea while observing that even though he had a right to a fair trial a fair investigation was required in the larger public interestdirecting police to produce the accused before central forensic science laboratory of cbi at lodhi colony the court said the test could be be conducted even if the accused did not consent to it it said that even though the accused was not willing to give his voice sample for the test he could still be asked to do it for reaching the ends of justice