In the biggest Naxal attacks on security forces in Chhattisgarh in seven years, 25 CRPF jawans were martyred in Sukma district of the state on Monday. The incident took place at around 12.25 PM between the Burkapal-Chintagufa area in south Bastar, one of the worst Maoist violence-hit area of the state. "The Naxals fired at a patrolling party of the CRPF near Burkapal village leaving six personnel injured,\u201d special director general (anti-Naxal operations) of Chhattisgarh police, D M Awasthi told PTI. Maoists fired from hilltops at a group of CRPF personnel who were guarding workers building roads in a forested area of Sukma district, police officer Jitendra Shukla told AP. Earlier the death toll was reported to be 12, which soon reached 24. Six other jawans were injured and rushed to a hospital in Raipur. As soon as the news of the incident came out, Chhattisgarh CM Raman Singh cancelled his engagements in Delhi and rushed for Raipur. Attack on @crpfindia personnel in Chhattisgarh is cowardly & deplorable. We are monitoring the situation closely. \u2014 Narendra Modi (@narendramodi) April 24, 2017 We are proud of the valour of our @crpfindia personnel. The sacrifice of the martyrs will not go in vain. Condolences to their families. \u2014 Narendra Modi (@narendramodi) April 24, 2017 Reacting to the incident, Congress leader Manish Tiwari said: "Extremely unfortunate, hope government will act with alacrity. Hope government initiates appropriate action against people responsible for the attack." Minister of State (Home) Hansraj Ahir would visit Raipur in the wake of the\u00a0Naxal attack that claimed the life of \u00a025 CRPF personnel. Bastar IG Vivekanand Sinha and DIG Sunderraj also left for Sukma immediately after the incident was reported. In the last few years, Maoists have managed to carry out a number of attacks against the security forces, killing over 100s of them in states like Chattisgarh, Bihar, Odisha and Jharkhand. Here is a timeline of Naxal attacks on security forces in India since 2010: April 24, 2017: 25 CRPF personnel killed in Sukma district by Maoists. Six jawans injured. March 11, 2017: Maoists kill 12 CRPF men and loot their arms in Sukma. Four persons injured. July 19, 2016: Naxals kill 10 CRPF commandoes in the jungles of Bihar\u2019s Aurangabad district. April 11, 2015: Naxals kill seven policemen and injure 10 other in a gunbattle at Sukma. The encounter took place in the worst-affected Pidmel-Polampalli area of the district. June 14, 2014: Around 500 Naxals kill three passengers and injure six others after hijacking Dhanbad-Patna express train in Jamui district of Bihar. April 10, 2014: Naxals blow a CRPF jeep, killing six commandoes and two others in Jamui district of Bihar. March 11, 2014: Maoists kill 15 security persons in Sukma district. February 28, 2014: Maoists kill six police personnel, including a SHO, in Dantewada district of Chhattisgarh. July 2, 2013: Naxals kill five policemen including Superintendent of Police of Pakur in district Dumka of Jharkhand. May 25, 2013: Naxals kill 25 Congress leaders including former state minister Mahendra Karma and Chhattisgarh Congress chief Nand Kumar Patel in Darbha valley of Chhattisgarh. October 18, 2012: Maoists kill six CRPF men and injure eight personnel, including a deputy commandant, in landmine blasts and gunbattle in district Gaya of Bihar. June 29, 2010: Naxals ambush and kill around 26 CRPF personnel in district Narayanpur of Chhattisgarh. May 8, 2010: Maoists kill eight CRPF jawans after blowing up a bullet-proof vehicle in district Bijapur of Chhhattisgarh. April 6, 2010: Naxals kill 75 CRPF personnel and a Chhattisgarh police official in district Dantewada. April 4, 2010: Naxals kill 11 security personnel of the elite anti-Naxal force Special Operations Group (SOG) in Koraput district of Odisha. Feb 15, 2010: Naxals kill 24 personnel of the Eastern Frontier Rifles (EFR) in Silda, West Midnapore district of West Bengal.