Mumbai, Sept. 24 -- Bollywood actress Deepika Padukone, who along with other celebrities were issued summons by the Narcotics Control Bureau (NCB) for the probe into a drugs case, will join the investigation on Saturday, officials said on Thursday. Deepika has acknowledged the summon and has agreed to join the investigation on Saturday, they said. According to reports, Deepika is shooting for a film in Goa these days. Besides Deepika, NCB has also summoned other Bollywood actresses like Sara Ali Khan, Shraddha Kapoor, Rakul Preeet Singh, Deepika's manager Karishma Prakash and Sushant's former manager Shruti Modi for questioning in the drug-related case pertaining to actor Sushshant Singh Rajput death case. While Deepika, along with Karishma...