The National Investigation Agency had a painstaking job ahead when it took over the probe into the Pulwama attack. The NIA hit a dead end almost immediately after taking over the probe, but over the past couple of months the agency made crucial breakthroughs.
The key to these breakthroughs was the mobile phone of a dead suspect. Thanks to this the NIA was able to get crucial numbers, which finally led it up to the suspects.
The phone also had several images, which depicted the planning ahead of the attack. The phone belonged to Mohammad Umar Farooq, who was one of the key planners.
Source: One India