Naxals have torched four vehicles engaged in road construction work in Barachatti in Gaya district of Bihar, on Thursday morning.
The incident has been reported a day after the Naxals, on Wednesday, triggered an IED blast in Maharashtra's Gadchiroli in which 16 people including 15 security personnel lost their lives.
Searching and combing operation were going on in the Kurkheda forest area, on Thursday.
Uttar Pradesh Chief Minister Yogi Adityanath on Wednesday paid homage to those who died in the Naxal attack in Maharashtra and said that the sacrifice of the 15 police personnel will be avenged by killing at least 100 Naxals.
"This is a battle of the entire country and 130 crore countrymen are with our brave jawans," he said in an election rally in the state, reported PTI.
"Our 15 jawans sacrificed their lives but in return, we will kill at least 100 Naxals," he added.
PM Narendra Modi strongly condemned the Naxal attack.
"Strongly condemn the despicable attack on our security personnel in Gadchiroli, Maharashtra. I salute all the brave personnel. Their sacrifices will never be forgotten," he tweeted.
Earlier on Wednesday, the Naxals torched 25 vehicles belonging to a road construction contractor.
Those killed in the blast were members of the Quick Response Team (QRT) of Gadchiroli Police, which was on way to inspect the torched vehicles, an official said.
"My thoughts & solidarity are with the bereaved families. The perpetrators of such violence will not be spared," the PM said in his tweet.