Golaghat MLA Ajanta Neog was expelled from the party on Thursday following a decision taken at a meeting of the Congress High Command.
The high command had earlier issued a notice to the MLA to explain her resignation from the party, but Neog refused to oblige.
The expulsion of the MLA in the run-up to the 2021 Assam Assembly elections has created a hue and cry in the Assam Pradesh Congress Committee. It is being speculated that Ajanta Neog is likely to join the ruling BJP party in the state.