NCB Mumbai Director Sameer Wankhede has been probing drug cases involving several Bollywood actors including Rhea Chakraborty, Deepika Padukone and Arjun Rampal since Sushant Singh Rajput's death. The 40-year-old IRS officer has also served in the NIA. While working in customs, Wankhede ensured that the 2011 Cricket World Cup trophy was released at Mumbai airport only after duty was paid.