The Narcotics Control Bureau (NCB) is likely to summon actress Deepika Padukone and her manager, Karishma Prakash, as part of its probe into use of drugs in Bollywood. The names of Sara Ali Khan, Rakul Preet Singh and Simone Khambatta have also figured in the list of Bollywood actors likely to be interrogated by the NCB which is trying to prove the Bollywood-drug mafia nexus.