Khan used to live with his family at 10 Mafidul Islam Lane in Beniapurkur.
IM was banned in India on June 4, 2010. It was also blacklisted as a terrorist outfit in the US, the UK and New Zealand. IM is known as shadow organisation of Simi and Lashkar-e-Taiba (LeT).
"A petition under section 166 A of the CrPc 1973 for issuance of a letter rogatory was filed before the chief session judge at Kolkata on Wednesday with the details of the evidence required from Luxembourg," said Sekhar Bajaj, deputy superintendent of police, NIA, before the court in his petition.
The NIA was pressed into action in November 2010 after a city businessman received 13 phone calls from unknown numbers. The caller had demanded Rs. 20 crore from him.
A complaint was lodged by the businessman at Bhowanipore police station on February 26, 2010.
Kolkata Police began investigations and found that between February 19 to October 2010, the businessmen had received 13 calls.
NIA discovered that the caller was demanding money for raising funds for terror operations.