The CBI is investigating the Sushant Singh Rajput death case. Rhea Chakraborty and her brother Showik Chakraborty along with the others will be questioned for a few more days. Meanwhile, Aaj Tak exclusively spoke to Umakant Mishra, former NCB officer. Umakant Mishra doubts that darknet may have been used to purchase drugs in this case. Watch the video for more details.