<font color="#222222">Four personnel of the para-military Central Reserve Police Force, CRPF, were martyred in a Maoist attack on Saturday evening in poll-bound Chhattisgarh and a jawan was injured in the incident. </font><br />'' <br />'' <span style="color: #222222;">Maoists ambushed the CRPF team on Basaguda-Tarrem road in Bijapur district of Bastar division. The CRPF personnel were part of a road opening party when the Maoists triggered a blast in Avapalli area targeting the mine protected vehicle of the CRPF and then opened indiscriminate fire on the security personnel. </span><br />'' <br />'' <span style="color: #222222;">Jawans retaliated the Maoist attack. </span><br />'' <br />'' <span style="color: #222222;">In the gun battle, an Assistant Sub Inspector, a head constable and two constables lost their lives. </span><br />'' <br />'' <span style="color: #222222;">The CRPF personnel belonged to 168 battalion. Additional reinforcements have been rushed to the spot of the blast and massive combing operations have been launched. </span><br />'' <br />'' <span style="color: #222222;">The injured jawan was airlifted to the state capital Raipur for the treatment. </span><br />''