Among the three slain personnel, two belonged to the CoBRA's 201st battalion and one to the CRPF's 150th battalion, a senior police officer said.
Setting up new camps of security forces in these villages in the last seven months has been paving the way for development of the respective areas, they said.
A cache of weapons, including an AK-47 rifle, one SLR (self-loading rifle), one INSAS rifle, one LMG rifle and one .303 rifle were also recovered from the encounter spot.
Three security personnel suffered injuries in the fierce gun-battle and a large quantity of weapons was also recovered from the spot, the state police said.
The gunfight occurred in a forest near Hidur village under Chhotebethiya police station limits, where a joint team of security personnel was out on an anti-Naxal operation, Inspector General of Police (Bastar Range) Sundarraj P said.
Six Naxalites, including "deputy commander" Punem Nagesh, his wife, and another female cadre, were killed in an encounter with security personnel in Chhattisgarh's Bijapur district on Wednesday, a police officer said.
According to the police, these villages have never seen unfurling or hoisting of the national flag since 1947, but that will change when its residents will join the rest of the country in celebrating Republic Day, which commemorates the day when the Constitution came into effect in 1950.
A cache of explosives and weapons was also seized from the encounter site, he added.
Eight Naxalites and a jawan of the Special Task Force (STF) were killed in an encounter in Chhattisgarh's Narayanpur district on Saturday, police said.
Police personnel checked vehicles and conducted flag marches at various places in Punjab on Wednesday while central forces maintained a tight vigil in Tripura.
In a separate incident, a commando of the Central Reserve Police Force's jungle warfare unit CoBRA was injured when a pressure improvised explosive device (IED), planted by Naxalites went off in the district, police said.
The police on Saturday claimed to have gunned down eight Maoists during an encounter in forests near Kutul-Farasbeda and Kodtameta villages in the district.
Twelve constituencies of Bastar division were among 20 assembly segments in Chhattisgarh that went to the polls in the first phase on November 7. A high voter turnout of 78 per cent was recorded in these 20 seats.
Of the ten police personnel who lost their lives in a Maoist attack in Chhattisgarh's Dantewada district, five had joined the force after quitting Maoist violence, a senior official said on Thursday.
A joint team of multiple forces are undertaking the offensive to target some senior and most-wanted Naxal commanders, official sources said.
The Chhattisgarh police, however, said the claim seemed to be an attempt to mislead the local population, and the security forces never compromise on the safety of the local people during their operations.
A Greyhounds jawan sustained injuries, following which he was airlifted to Warangal and admitted to a hospital.
The search operation is underway in nearby areas.
The explosive, however, remained "undetected" during the demining exercise conducted a day before the attack on Wednesday, they said.
Five police personnel were killed and 13 others injured as Naxals blew up the bus in which they were traveling in Chhattisgarh's Narayanpur district on Tuesday, senior police officials said.
Sundarraj said, "Security forces are in a dominating position."
As per preliminary information, constable Reetesh Ranjan fired at his colleagues with his service weapon, an AK-47 rifle, the official said.
Naxalites blew up the mini-goods van in which the security personnel were travelling by using an Improvised Explosive Device (IED), police sources said.
Avenging the Sukma attack, security forces claim to have gunned down 12-15 Maoists in Chhattisgarh's Basaguda-Chintalnar area on Sunday.
"With the death of RK, the outlawed CPI (Maoist) has lost its three central committee members and as many other senior cadres in the last two years. These deaths would certainly deplete the strength of the Naxal movement which has been losing its ground. Security forces would make an all-out attempt to soon bring an end to the five-decade-long mindless violence by ultras in the region," Inspector General of Police (Bastar range) Sundarraj P said.
Earlier, in a major joint offensive, separate teams of nearly 600 personnel belonging to the District Reserve Guard (DRG), Special Task Force (STF) and Commando Battalion for Resolute Action (CoBRA) -- an elite unit of Central Reserve Police Force, launched an anti-Naxal operation from three sides towards Elmagunda after getting inputs about a huge gathering of ultras there on Saturday.
An ITBP constable, identified as Masudul Rahman, opened fire from his service weapon, killing four troopers at the spot and injuring three other jawans, after some unknown dispute among them.
The incident occurred around 7.45 pm on the "black top road" between Peddakodepal and Naimed villages under the Naimed police station area, when the victims were heading towards neighbouring Dantewada district in an SUV to visit a fair, said Deputy Inspector General (anti-naxal operation) Sundarraj P.
In this photograph, which is being circulated on social media, Manhas, a commando with the 210th CoBRA battalion of the Central Reserve Police Force (CRPF), is seen sitting in a hut alone without any Naxal in the frame.
Manhas went missing after the April 3 gunfight between Naxals and security personnel near Sukma-Bijapur border.
The skirmish took place around noon in a dense forest near Mahla village in Kanker district
The killed cadres, identified as Vargese and Linga, were allegedly involved in the ambush in which Mandavi and his four security personnel were killed on April 9, Superintendent of Police Abhishek Pallava said.
1 jawan was injured in a gunbattle with Naxals in Chhattisgarh's Kanker district.
While they were cordoning-off a forested patch near Pariya village, the Naxals triggered an IED.
CoBRA commando Rakeshwar Singh Manhas went missing after the April 3 ambush in Chhattisgarh's Bastar region.
The jawans reportedly had a brawl before the fatal incident took place.
This is suspected to be a Naxal ambush for security forces. Maoists fired multiple rounds while attacking the vehicle-mounted team, the official said.
Ramanna was instrumental in several killings and attacks on security forces, including the 2010 Tadmetla massacre that claimed the lives of 76 troopers. He was also involved in the 2013 Naxal attack in Darbha valley where 29 people, including some senior Congress leaders and policemen, were killed.
An Mi-17 Helicopter had landed at a field in jungle area in the midst of an active encounter area to evacuate the jawans and brought them to Raipur.
In a major joint offensive, separate joint teams of security forces, comprising over 2,000 personnel, had launched an anti-Naxal operation from Bijapur and Sukma districts in the South Bastar forests, considered as the Maoist stronghold, on Friday night.
