Abeed Khan was arrested from a church where he was staying with a fake identity for the past four-five months, police said.
Confirming the arrest, Director General of Police Sanjay Kumar said that Khan is being interrogated by intelligence agencies.
Sources said that the man was named by some of his accomplices during interrogation after they were arrested in Delhi.
The NIA and police refused to divulge further details in this connection, saying that investigations are underway.
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