Armed Maoists torched vehicles of a construction company earlier this week in Khaira village of Bihar's Gaya District.
Deputy Superintendent of Police (DSP) Tanveer Ahmed said: "Around 11:35 p.m. on Monday, we got to know that a construction vehicle has been set on fire here. After the attack, the police are on alert and have been conducting raids. We expect positive results as soon as possible."
He added that after the attack, Maoists left in two groups. The raids are being constructed in collaboration with the paramilitary force, Central Reserve Police (CRPF).
A guard, Yogender Yadav, said: "Maoists snatched my blanket and slapped me twice. They took the stick and broke the glasses. One man had a sack in his hand and another one had a vessel filled with oil. After vandalising the vehicle, they set it on fire. After that, they threatened me to keep quiet and started shouting slogans.
"They were hailing Maoists and condemned contractors and brick kiln owners. After saying all this, they left in southern direction," added Yadav.
Three days back, a similar attack was carried out by the Maoists in Panchanpur village of the district.
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The Maoists, who say they are fighting for the rights of the poor and landless, control some of India's mineral-rich areas and operate in large swathes of the eastern, central and southern countryside.
Prime Minister Manmohan Singh has described the Maoist rebellion as one of the gravest security threats to India.
The Maoists have killed police and politicians, and targeted government buildings and railway tracks in an insurgency that has killed thousands since the 1960s.
The rebels are estimated to number 7000 hardcore fighters in nearly a third of India's 630 districts.