Mehrauli murder accused Aftab Amin Poonawala was on Monday taken to the Central Forensic Science Laboratory in New Delhi to record his voice sample after the police, during their investigation, came across an audio clip in which he was purportedly heard fighting with Shraddha Walkar. According to them, Aftab Poonawala reached the CFSL office around 11 a.m. and left for …