A security source informed that a four-member team of ULFA militants were on their way to Tengapani forest in Arunachal Pradesh when they came face to face with an army team.
The hideout was a base for providing medical treatment to ULFA's injured cadres.
Former chief minister Tarun Gogoi demanded a CBI inquiry into the episode
"There will be no let up in vigil against the banned ULFA (United Liberation Front of Asom) now onwards under any circumstances," vowed Assam Chief Minister Tarun Gogoi
The blast, which occurred due to a technical snag, set off oil spillage over a three km radius area that spread to Rajabari village, sources said.
There was no casualty or injury in any of the explosions
Road and rail links between lower and upper Assam remained disrupted for the fourth day on Tuesday.
The killed teacher hails from Nagaon Tinali under Pengeri police station. He is survived by young wife and a five-year-old daugher.
An indefinite curfew has been clamped in three upper Assam towns as violence against army and administration continued unabated, leaving at least six dead, 40 injured.
Police suspect the gunmen belonged to the ULFA-Independent faction as they were in battle fatigue.
This year the army have maintained constant vigil over the two vital supply lines to ULFA bases in Myanmar putting the outfit cadres holed up in Myanmar in a spot.
The deluge, which had affected 2.5 lakh people in 11 districts on Wednesday, spread to six more districts on Thursday affecting 4.23 lakh people, it said.
A dwindling population of swarm buffalo has hit the dairy industry in Assam's Sorbhog and Bokakhat areas, famous for curd and milk products.
Thousands of people on Tuesday were witness to the cremation of soldier Mahendra Nath Phukon who died about 40 years ago in an AN-12 clash at Lahaul Valley in Himachal Pradesh along with 101 others while he was flying to his post.
The Assam Rifles said the drive against ULFA militants would continue in Nagaland in the coming days even though the ceasefire was in force in the state.
Assam has been put on red alert as gun-toting United Liberation Front of Asom militants were on a rampage in three Upper Assam districts where they have mowed down 48 people since Friday, including 28 on Saturday.
The first day's play in the Ranji Trophy match was washed out without a ball being bowled.
Two persons were killed and 13 others injured when an improvised explosive device planted by the banned United Liberation Front of Asom went off in the Upper Assam business hub of Tinsukia town at around 6.20 pm on Saturday.
The 12-hour Assam bandh was called by the youth wing of former chief minister Prafulla Mahanta's new party to protest against the recent ethnic violence in Karbi Anglong district.
Five of the slain rebels were in uniform and had torches in their hands, police said.
Public sector Oil India Ltd has declared an emergency and called for global fire extinguishing experts to control a blaze that broke out on Thursday in one of its wells at Dikom in Upper Assam.
After several delays, it will be completed by Jan 2017.
The blast took place in Paradise cinema hall in the heart of Tinsukia town just as the audience were entering for the matinee show at 1300 IST.
Oil and Natural Gas Corporation has discovered new reserves of oil in Assam, Subir Raha, chairman and managing director of the company, said on Wednesday.
Four persons, including a six-year-old girl, were injured in two explosions that rocked he city's commercial hub Fancy Bazaar on Saturday.
A 12-hour Assam bandh called on Friday by the BJP, to protest the introduction of a Constitutional Amendment Bill to facilitate swapping of land enclaves with Bangladesh, evoked mixed response.
A huge crater was created at the site of the ambush and two vehicles -- a jeep and a Shaktiman truck --were completely damaged.
The 84-year old veteran Congressman, who died from post-COVID complications on Monday, was a Nehru-Gandhi family loyalist.
The Naxals are trying to set up organisational bases in the Northeast to forge ties with other insurgent groups to meet their military needs and the Assam-Arunachal Pradesh border has emerged as another theatre of Maoist activities, the government said on Wednesday.
Violent agitations continued to rock parts of West Bengal for second consecutive day on Saturday as people protesting against the amended Citizenship Act set several buses on fire and torched portions of a railway station complex, officials said.