After Tuesday's incident, deputy inspector general of police (anti-Naxal operation) P. Sunderraj said, "The BJP MLA, three security personnel accompanying him and the driver of the vehicle were killed in the Naxal attack".
Sources have suggested that the firing is still going on at the site of the blast and that a battalion of CRPF has been rushed to the spot. The escort vehicle of State Police came under the blast. "It left a crater on the ground". BJP chief Amit shah, Union minister Ravi Shankar Prasad, former Chhattisgarh chief minister Raman Singh, Congress chief Rahul Gandhi and Nagaland Chief Minister Neiphiu Rio also condemned the attack.
Four soldiers were killed in an ambush there just last week.
Offering his condolences to the families of Mandavi and others who lost their lives, PM Modi said that their sacrifices won't go in vain.
Taking cognizance of the attack, the Election Commission has directed an increase of security forces in the area, asserting that polling will happen as scheduled. "The sacrifices of these martyrs will not go in vain", Modi tweeted.
This is the third attack by Naxals in the Batar region since the polls were announced on 10 March.
Armed insurgencies simmer in at least nine Indian states, from Indian held Kashmir in the snowy north to the jungles of the country's interior, creating risky conditions for party officials and their candidates on the hustings.
The attack took place near the Shyamgiri village under Kowakanda police station around 5 PM.
Maoists had warned the locals not to vote in the election - posters carrying their message dot the area.
The guerrillas, who say they are fighting for the rights of tribal groups and landless farmers, often collect funds through extortion. Critics say the government's attempts to end the revolt through a no-holds-barred military offensive are doomed to fail.