The incident occurred at Shyamgiri hills when the MLA's convoy was heading towards Kuwakonda from Bacheli area.
2018 was an eventful year for political parties as many leaders of Congress, BJP and Left joined the ruling BJD.
The attack happened ahead of the visits by PM Narendra Modi and Congress president Rahul Gandhi to Bastar region, just days before the state goes to polls.
The report stated that while naxal violence came down by 20 per cent in 2017 against the figures for 2015, while the same for arrests stood at 55 per cent.
The security forces in all the Maoist prone districts have been directed to remain on maximum alert, keep sharp vigil and collect intelligence regarding any movement of the Maoists.