Sources privy to the investigation said teams had fanned out in Dachhan area in Kishtwar after some leads emerged about the presence of Junaid in that area.
The NIA has already announced a cash reward of Rs 10 lakh for information leading to the arrest of Junaid, whose age has been stated by the probe agency as 19 while his parents claim him to be only 16 years old.
Junaid's brother Wasim Akram, a medical student studying MBBS in a college at Bangladesh, was sent to Tihar jail on Monday after his custodial interrogation ended. He may also record his confessional statement, like the other two accused, who had sent email to media houses after the blast at Delhi high court that left 15 people dead.
The name of Ghulam Sarwar, a Lashker-e-Tayiba terrorist, has emerged as the main brain behind the September 7 blast after the NIA found similarities between the high court blast as well as May 2 blast near northern army headquarters located in Udhampur of Jammu region.
Plastic explosive and remote-controlled detonator used in the Udhampur attack were similar to those fitted in the suitcase bomb that had exploded outside the high court.Sarwar was named by the police as the prime suspect in the May 2 attempt to assassinate Major General D S Pathania, commandant of the northern army command's base hospital.