"The first blast occurred at around 11:45 AM near Maraiguda police station on the under construction Maraiguda-Golapalli road, in which the DRG jawan, identified as Makdam Joga, was killed," Sukma Additional Superintendent of Police Irfan Khan said.
A composite squad of Central Reserve Police Force (CRPF) and DRG was patrolling the region, located around 450 km from the state capital Raipur, to ensure security for the construction work, he said.
Assistant constable Madkam Joga inadvertently stepped over alandmine, triggering the explosion, Khan said.
Reinforcement was rushed to the spot and the critically injured cop was evacuated to Bhadrachalam in Telangana, where he succumbed to injuries, the official said.
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"Another explosion took place on the same route after about half-and-hour, inflicting injury on an earth mover driver," he said.
The earth mover machine accidentally hit an IED while it was operating on the road, he said, adding the vehicle driver was injured in the attack.
The wounded driver was immediately shifted to Bhadrachalam for treatment, the Addl. SP said.
A combing operation was launched in the region to nab the ultras, he said.