The NCB have found out that around 50 names, including many actors, actresses, producers and directors, might be involved in the Bollywood drug controversy. Rakul Preet Singh will be grilled by the agency in connection to the Bollywood drug probe. According to the NCB sources, the agency retrieved the drug chats of Rakul Preet with Rhea Chakraborty. The actress in her statement to the NCB also confessed the involvement of Rakul Preet in the drug controversy. Watch this video.