A chronology of Naxal attacks on security forces in the country in the past five years.
June 29, 2008: Maoists attack a boat on Balimela reservoir in Odisha carrying four police officials and 60 Greyhound commandos, killing 38 troops.
July 16, 2008: 21 policemen killed when a police van is blown up in a landmine blast in Malkangiri district of Odisha.
April 13, 2009: 10 paramilitary troops killed in eastern Odisha when Maoists attack a bauxite mine in Koraput district.
April 22, 2009: Maoists hijack a train with at least 300 people on board in Jharkhand and force it to Latehar district before fleeing.
May 22, 2009: Maoists kill 16 policemen in the jungles of Gadchiroli district in Maharashtra.
June 10, 2009: Nine policemen, including CRPF troops and officers, ambushed by Maoists during a routine patrol in Saranda jungles in Jharkhand.
June 13, 2009: Naxals launch two landmine and bomb attacks in a small town close to Bokaro, killing 10 policemen and injuring several others.
June 16, 2009: Maoists kill 11 police officers in a landmine attack followed by armed assault. In a separate attack, four policemen killed and two others seriously injured when Maoists ambush them at Beherakhand in Palamau district.
June 23, 2009: A group of motorcycle-borne armed Naxal rebels open fire on Lakhisarai district court premises in Bihar and free four of their comrades including the self-style Zonal Commander of Ranchi.
July 18, 2009: Naxalites kill a villager in Bastar and in a separate incident torch a vehicle engaged in road construction work in Bijapur district of Chhattisgarh.
July 27, 2009: Six persons killed when Naxals trigger a landmine blast at Dantewada district in Chhattisgarh.
Sep 4, 2009: Naxals kill four villagers in a forest in Aaded village in Chhattisgarh’s Bijapur district.
Sep 26, 2009: Naxals kill BJP MP from Balaghat Baliram Kashyap’s sons at Pairaguda village in Jagdalpur (Chhattisgarh).
Oct 8, 2009: 17 policemen killed when Maoists ambushed them at Laheri police station in Gadchiroli district of Maharashtra.
Feb 15, 2010: 24 personnel of the Eastern Frontier Rifles (EFR) killed as Maoists attack their camp in Silda in West Midnapore district of West Bengal.
April 4, 2010: Maoists trigger a landmine blast killing 11 security personnel of the elite anti-Naxal force Special Operations Group (SOG) in Koraput district of Odisha.
April 6, 2010: 75 CRPF personnel and a Chhattisgarh police official killed in a Naxal attack in Dantewada district.
May 8, 2010: Eight CRPF jawans killed when Naxals blow up a bullet-proof vehicle in Bijapur district of Chhhattisgarh.
June 29, 2010: At least 26 CRPF personnel killed in a Naxal ambush in Narayanpur district of Chhattisgarh.
October 18, 2012: Six CRPF men killed and eight personnel, including a deputy commandant, were injured in landmine blasts and gunbattle between the cops in Gaya district.
May 25, 2013: 25 Congress leaders including former state minister Mahendra Karma and Chhattisgarh Congress chief Nand Kumar Patel killed in a Naxal attack in Darbha valley in Chhattisgarh.
July 2, 2013: Five policemen including Superintendent of Police of Pakur killed in an attack in Dumka, Jharkhand.
February 28, 2014: Six police personnel, including a SHO, killed in Maoist attack in Dantewada district of Chhattisgarh.
March 11, 2014: 15 security persons killed in Chattisgarh’s Sukma district.