Mobile phones of actors Deepika Padukone, Sara Ali Khan and Rakul Preet Singh have been seized by the Narcotics Control Bureau in its widening probe into allegations of widespread drug abuse in Bollywood triggered by the death of Sushant Singh Rajput. The anti-drug agency also questioned the Bollywood A-listers for hours. However, with no recovery of drugs, some have asked what is really the case and what exactly is the Narcotics Control Bureau probing?