NEW DELHI, Nov. 18 (Xinhua) -- Bollywood director Mahesh Bhatt's son Rahul Bhatt has revealed during his interrogation by the National Investigation Agency (NIA) that he had introduced Mumbai attacks terror suspect, U.S. citizen David Coleman Headley to 15 other film celebrities in India, said Indian police sources on Wednesday.

    Film actors Karan Kapoor, Kangana Ranaut, Aarti Chabria and Tara Sharma were among the Bollywood personalities who met Headleythrough Rahul, while some film critics are also among the 15 reported to have met Headley.

    The nefarious designs of the suspect are apparent from the fact that he wanted to befriend the Bollywood industry and was using Rahul as the medium to do so.

    Film star Emraan Hashmi is likely to be questioned by the NIA for his alleged links with the suspect. However, so far there is no information on the timing of the grilling of the 15 suspects.

    Rahul also told the NIA that he and Headley had met several Bollywood personalities together, while the terror suspect also met some of them in private.

    Vilas, who was training them both at a gym frequented by the duo, said that according to his understanding Headley was an immigration lawyer and his job was just to train him.

    The NIA is likely to unveil more details regarding Headley's Bollywood connection in the coming days.

    India is grappling with the magnitude of the terror plot of Headley and his accomplice Tahawwur Hussain Rana, with investigators unearthing new evidence each passing day.

    More than 20 teams in India are spending their days and nights trying to re-trace the steps of Headley and Rana, arrested by the FBI last month in Chicago for plotting terror attacks against India and Denmark at the behest of Pakistan-based banned outfit Lashker-e-Toiba.