A team of the National Investigation Agency (NIA), probing the Maoist attack on Congress leaders in Chhattisgarh, on Tuesday visited the site where the ultras had attacked the convoy even as the state government constituted a one-member judicial commission to probe the incident.
"The six-member NIA team visited the Jiram valley (located around 400 km from Raipur) in the Darbha region of Bastar, where the attack was executed," a senior police officer said.
"Security has been stepped up in the region."
The NIA team inspected the attack site for nearly two hours, during which they collected blank cartridges and other material as evidence, the official said. The team also investigated the vehicle that overturned after being blown up in a landmine blast triggered by the ultras before they opened fire on the convoy.
They also inspected the route and its nearby locations.
The team was accompanied by the technical staff of the SPG and senior officersof the CRPF, besides forensic experts.
The road, which was damaged after the landmine blast, has been repaired after the attack for connectivity in the region, the official said.
The judicial panel, to be headed by justice Prashant Mishra of the Chhattisgarh high court, will give its report in three months.
Meanwhile, the Chhattisgarh government on Tuesday suspended Jagdalpur SP Mayank Shrivastava and attached him to police headquarters. Bastar inspector general of police Himanshu Gupta was transferred.