First arrested by the state police on charges of sedition, Gogoi was rearrested under the National Security Act by the BJP-led state government on September 25.
Gogoi was accused by the state police of instigating the public to take up arms against the government at a rally held in Moran town near Dibrugarh on September 12.
The three accused were arrested over the last two weeks following a police raid after a tip-off about alleged cow slaughter.
Activists question the tough action against the Bhim Army when several members of the dominant castes have been let off the hook.
Opposition leaders and opponents say the move is a dangerous escalation in the government’s ongoing crackdown on dissent.