New Delhi, Feb 20: The National Investigation Agency (NIA) has registered a case and is launching a fresh probe into the attack on a CRPF convoy in Jammu and Kashmir’s Pulwama in which 49 troopers were killed on February 14. “We have re-registered the Pulwama attack case,” said an NIA spokesperson, here on Wednesday. The move comes five days after the worst-ever attack on the Central Reserve Police Force (CRPF) convoy since militancy erupted in 1989 in the state. The first case in the Jaish-e-Mohammad (JeM) claimed attack was registered by the Jammu and Kashmir Police on the day of attack. A day after the attack on the CRPF convoy, the probe agency officials along with explosive and forensic experts had collected material evidences required for the probe. A team of senior NIA officers has been camping in Srinagar since the suicide attack on the Jammu-Srinagar highway when an explosive packed SUV rammed a bus carrying the CRPF troopers.