As NCB widens its probe into the alleged Bollywood-drug nexus case, after Sara Ali Khan, Shraddha Kapoor and Rakul Preet Singh, now Deepika Padukone, Dia Mirza are on the probe agency's radar. NCB is likely to summon Deepika Padukone and others for questioning. How NCB will tighten its noose on celebs in drug probe? To know more watch this video.