Mumbai: The Narcotics Control Bureau (NCB), probing the alleged Bollywood-drug nexus, might summon actress Deepika Padukone if needed, while it again questioned actor Sushant Singh Rajput's talent manager Jaya Saha on Tuesday, officials said.

NCB sources said some WhatsApp conversations purportedly discussing drugs are on the radar of the agency.

Some of these chats were purportedly between Padukone's manager Karishma Prakash and one "D", they said.

An official said the NCB might also summon actors Rakul Preet Singh and Sara Ali Khan, and designer Simone Khambatta this week.

The central anti-drugs agency has already summoned Karishma Prakash and KWAN talent management agency's CEO Dhruv Chitgopekar, but the former could not appear before the agency on Tuesday due to ill-health.

"The NCB will first question Karishma Prakash and might summon actor Deepika Padukone if needed," the official said.

During the NCB's investigation into the drugs angle in Rajput's death case, a wider drug nexus in Bollywood surfaced.

Meanwhile, Rajput's talent manager Jaya Saha was questioned by the NCB for the second consecutive day on Tuesday and has been called again on Wednesday, another official said.

She was quizzed by the NCB in connection with alleged Bollywood-drugs nexus and later allowed to go home, he said.

Padukone's manager Prakash, who was summoned to join the investigation, did not appear before the NCB on Tuesday due to ill-health, the official said.

Prakash has been exempted from appearance before the anti-drug agency till Friday, he said.

Rajputs former manager Shruti Modi will be called for questioning on Thursday, the official said.

The drug law enforcement agency has so far arrested more than 12 people, including Rajput's girlfriend and actress Rhea Chakraborty and her brother Showik, in connection with its probe linked to the case of the actor's death.

Rajput (34) was found hanging at his home in suburban Bandra on June 14.

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Mumbai:The crime branch of Mumbai Police on Tuesday arrested two former employees of Hansa research agency in connection with the fake Television Rating Points (TRP) racket, an official said.

This takes the number of arrested persons in the case to eight.

Ramji Verma (41) and Dinesh Vishwakarma (37) were working with Hansa agency for a few years.

Verma was arrested from Worli area here, whereas Vishwakarma was apprehended this evening at the Mumbai airport, the official said.

The alleged fake TRP scam came to light when ratings agency Broadcast Audience Research Council (BARC) filed a complaint with the police through Hansa Research Group, alleging that certain channels were rigging TRP numbers to lure advertisers.

It was alleged that some families at whose houses meters for collecting data of viewership were installed were being bribed to tune into a particular channel.