NDA convenor George Fernandes on Tuesday demanded the immediate imposition of President's Rule in Assam following the massacre of Hindi-speaking people in the state.
He alleged there was a "secret understanding" between the Congress and the banned ULFA and the government was now finding it difficult to handle things.
Fernandes also met four incarcerated ULFA leaders - vice-chairman Pradip Gogoi, political ideologue Bhimkanta Buragohain, cultural secretary Pranati Deka and Ramu Mech - at the central jail in Guwahati.
"The Congress government which has links with the ULFA has to go as it has miserably failed to control law and order and protect innocent lives," he said.
"Major opposition parties in the state are also silent on this because they get part of the loot."
Expressing resentment at the derailing of the peace process between the ULFA and the Centre, he said there was an immediate need for resuming it. "Someone has to take the initiative and that is why I will personally take up the matter with the prime minister."
Fernandes said the jailed ULFA leaders tried to convince him the group was not involved in the killing of migrant labourers in the state.
"In Pradip Gogoi I found a sensitive mind and what he was talking made a lot of sense... They (said) the killings were the handiwork of the government to hide its corruption.