The notice comes after some SIM cards were allegedly procured by five members of SIMI and IM on fake identities.
The Supreme Court has extended the ban on SIMI for six more weeks.
Jaipur blast kingpin an expert at bomb-making
Indian Mujahideen on Saturday sent an e-mail threatening more attacks.
Human rights activists are incensed that the govt is playing the blame game.
India's internal security looks fragile as the country battles regular terror attacks.
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