The banned insurgent group called upon all ethnic groups in Assam to remain united behind its revolution against the 'Indian colonial rule' with an objective to liberate Assam and its people.
Rajkhowa hoped the ULFA's decision would bring about a atmosphere conducive to talks with the government.
The letter asked the Centre not to approach them directly for any negotiation until the three conditions were met.
The condition is that the government must include the issue of sovereignty in the talks.
ULFA accuses Centre of being silent after first round of talks
Nearly 100 Raj Bhavan staff petitioned President Pranab Mukherjee, the Prime Minister and Union Home Minister Rajnath Singh seeking their intervention to remove the Governor and restore the dignity of Raj Bhavan.
"We always said Tuki did not have a majority. His resignation proves BJP right as well as the actions of the governor," its national secretary Shrikant Sharma said.
Following is the chronology of events in the Arunachal Pradesh crisis in which the Supreme Court on Wednesday ordered restoration of the dismissed Congress government by quashing all orders and decisions of the governor taken since December 9, 2015:
Locals, along with many other dignitaries, paid floral tributes to the former chief minister at his official residence.
The Centre should focus on achieving peace either through long-term ceasefire agreements or sustained military operations. Military operations which are just intermittent responses to particular incidents won't lead anywhere, says Devanik Saha.
The SC recalled the notice to Arunachal Pradesh Governor Jyoti Prasad Rajkhowa seeking his report to the President recommending central rule.
The petition seeking urgent hearing was mentioned before Chief Justice T S Thakur, at his residence, who directed the matter to be listed for hearing on Wednesday.
A militant of the United Liberation Front of Assam was killed in an encounter with the security forces on Tuesday.
Dissident Congress leader Kalikho Pul was on Friday night sworn in as chief minister of Arunachal Pradesh after more than two months of political crisis, shortly after the Supreme Court paved the way for government-formation and President's rule was lifted from the state.
New Arunachal Pradesh Chief Minister Kalikho Pul on Thursday proved his majority on the floor of the assembly with the support of 40 MLAs.
Rijiju said the Congress must apologise to the people of Arunachal for failing to remain as united, corruption free and accountable to the people.
The Union Cabinet on Sunday recommended imposition of President's Rule in Arunachal Pradesh, which is facing a political turmoil.
The Central Bureau of Investigation on Thursday placed Anup Chetia, founder member of banned United Liberation Front of Assam militant group, under arrest in connection with a nearly three-decade-old murder case registered by the central probe agency.
'It's a great victory for Constitutionalism and the rule of law.'
The party alleged that the governor's actions have created a 'constitutional crisis' and constitutional tenets of propriety are being 'wantonly disregarded'.
Chetia was deported to India last week after being jailed in Bangladesh for 18 years.
The apex court's verdict came as a shot in the arm for the Congress, paving the way for the return of its dismissed government headed by Nabam Tuki.
Former Arunachal Chief Minister Nabam Tuki on Thursday filed a fresh petition in the Supreme Court challenging imposition of president's rule in the state.
The Meghalaya government on Tuesday condemned attempts by Assam-based satellite television channels to create rift between different communities living in Assam and Meghalaya by spreading "unfounded" rumours.
Assam's new Director General of Police, Khagen Sarma on Friday said that Pakistan's spy agency Inter Services intelligence and other external forces are behind United Liberation Front of Asom (anti-talks) faction leader Paresh Baruah's efforts to form a common force comprising all northeastern insurgent groups to fight Indian security forces
The Supreme Court on Thursday virtually paved the way for government formation in Arunachal Pradesh by vacating its order on maintenance of status quo.
Tuki met Governor Tathagata Roy on Friday and sought the postponement of the floor test.
Sale of India's specialty tea varieties from exclusive estates in Assam and Arunachal Pradesh are on the rise in the domestic market, and sought after in overseas markets too.
Bangladesh handing over to India top ULFA leader Anup Chetia was a reflection of close bilateral ties particularly in security areas, the country's Home Minister Asaduzzaman Khan Kamal said in Dhaka on Thursday as he hoped New Delhi will return a wanted Bangladeshi national jailed in West Bengal.
The Opposition members charged the Governor with "unconstitutional" conduct after the Gauhati high court put on hold all his decision including move to advance the winter session of the assembly by a month.
The going has not been too smooth for the United Liberation Front of Asom, the violent separatist outfit that has, for decades, unleashed a reign of terror and mayhem in the north-eastern state.
The Supreme Court on Monday refused to pass an interim order on a fervent plea of the Congress against "illegal" swearing-in of its rebel leader Kalikho Pul-led government in Arunachal Pradesh.
The apex court asked what difference would it have made if the sitting was held as originally scheduled.
The Congress accuses the BJP of engineering defections and trying to dismiss the Congress govt in the state. The BJP says the CM has lost a majority in the assembly and must go for a vote of confidence.
The bench was also of the view that no interim order can be obtained unless the parties see the grounds for proclamation for President's rule.
'The Congress, all these decades, worked on a slow Hindi-isation and Indianisation of Arunachal tribes. The RSS wants rapid Hinduisation,' says Shekhar Gupta.
Now that an elected chief minister is at the helm, it is high time the Centre initiate discussions to appoint a full-time governor at the earliest, given that the state is set to face some challenging times, says N Sathiya Moorthy.
After Arunachal Pradesh and Uttarakhand, discontent is brewing among Congress MLAs in Manipur.