The National Investigation Agency (NIA) has registered a case against U.S. national David Headley and his accomplice Tahawwur Hussain Rana for allegedly plotting terror attacks in India even as investigators brace up for exploring their links, if any, with the terror attacks in Mumbai on November 26 last year.

Disclosing this here on Thursday, Union Home Minister P. Chidambaram said that Headley had visited India “several times before 26/11 and once after” the Mumbai terror strikes.

Both the accused are under the custody of Federal Bureau of Investigation (FBI) in Chicago.

Home Ministry officials said that a team of FBI officials may come to India to assist in the probe, if needed.

Meanwhile, referring to reports in a section of the media the U.S. embassy on Thursday clarified that FBI Director Robert S. Mueller was not visiting India.

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