The incident took place near Kasaram village on the afternoon of July 3, said a senior police officer. Police were informed about it only last evening, he added.
A road is being constructed between Kistaram and Chintalnar in Sukma district, which is around 500 km from the state capital Raipur. The densely forested region is considered to be a stronghold of rebels.
According to the contractor, Viranna and Veera Swami, two of his labourers, were carrying out measurement work when some armed Naxals came to the spot and forcibly took them away.
Naxals are committing such acts to obstruct the road construction, he said.
On April 24 this year, 25 CRPF personnel who were providing security for a road construction work were killed in a Naxal attack in Burkapal area of Sukma district.
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