What is the truth of Rhea & Sushant's drug connection?

The Narcotics Control Bureau (NCB) on Wednesday registered an NDPS case against Rhea Chakraborty and two others on the basis of an ED request to probe the drug angle in the death case. 

Sushant Singh Rajput's girlfriend Rhea Chakraborty for the first time on Friday appeared before the CBI's Special Investigation Team (SIT) probing the death of the Bollywood actor.