The Narcotics Control Bureau (NCB), the central agency probing a drugs case linked to the death of Bollywood actor Sushant Singh Rajput, will question Deepika Padukone and Shraddha Kapoor.

The NCB, which started its probe almost a month back, is the third central agency investigating a case linked to Sushant Singh Rajput’s death. The Enforcement Directorate is looking into allegations of money laundering while the Central Bureau of Investigation is probing the actor’s death. Sushant Singh Rajput was found dead at home on June 14.

Here is what NCB has done so far:

* The NCB started its probe in late August after the Enforcement Directorate reportedly found some evidence about Bollywood actor Rhea Chakraborty’s links to banned drugs.

* As it started investigating, the drug law enforcement agency interrogated Rhea Chakraborty’s brother Showik Chakraborty and manager Samuel Miranda. Both of them were arrested.

* Next, the agency interrogated Rhea Chakraborty for three days and arrested her on September 8.

* In the following days, NCB made a series of arrests, including Rajput’s domestic aide Dipesh Sawant, alleged drug peddler Abdul Basit Parihar, Goa resident Chris Costa, Showik’s friend Suryadeep Malhotra, and Dwayne Anthony Fernandes (from Dadar), Ankush Arenja (from Powai) among others.

* NCB seized a car belonging to Karamjeet Singh Anand, alias KJ, who is allegedly the main supplier of banned drugs to Bollywood, and arrested him.

* Meanwhile, the NCB conducted raids at several places in Bandra, Khar, Lokhandwala and Powai area.

* NCB interrogated Jaya Saha, Sushant Singh Rajput’s former talent manager. It has also summoned Deepika Padukone’s manager Karishma Prakash, who has sought exemptions till September 25 on the grounds of ill health.

* As far as its probe into international drug channels in India is concerned, the NCB has sought the help of the US, UK, Canada and Australian drug enforcement agencies to unearth suppliers of cocaine to Mumbai.

* In the latest development, the agency has issued summons to actors Deepika Padukone, Sara Ali Khan, Shraddha Kapoor and Rakul Preet Singh. Amid various reports surfacing that Rakul Preet may not join the probe as she is in Hyderabad, NCB has confirmed that the actor has acknowledged the summon.