"Statements of BJP leaders including their PM candidate Narendra Modi have led to this massacre. It is the NDA government which was responsible for creation of Bodoland Autonomous Council against the will of the majority of population of the region.
"Now by making statements against the vast majority of people in Bodoland area they have created tension which led to this tragedy," he said in a statement.
Khan urged the state government to take effective steps to apprehend and punish those responsible for the "massacre".
BJP has dismissed the criticism of Modi and said the violence in Assam was an outcome of "politics of divisiveness and blood" on which Congress had harvested "too many votes for too long".