Dr Rumi Nath, 33, surfaced in the state capital yesterday after a month's absence and admitted that she had married the second time without divorcing her husband and has now changed her name to Rabia Sultana.
An umbrella body of advocates in Assam's Barak Valley has denounced her marriage terming it as "illegal" and demanded her expulsion from the assembly.
Santanu Naik, general secretary of the advocates' body Akhil Bharatiya Adhivakta Parishad, demanded the MLA's expulsion from the Assembly.
The MLA defended her action by telling a Guwahati-based TV channel, "I am not committing any crime. I have no fear and am ready to face every situation."
The MLA was first elected to the Assembly in 2006 on a BJP ticket from Borkhola constituency of Barak Valley and later defected to the Congress.
In 2009, then Haryana Deputy Chief Minister Chander Mohan created a sensation when he disappeared from office and later announced that he had changed his name to Chand Mohammed and married Anuradha Bali alias Fiza, former Haryana assistant advocate, after adopting Islam. The two are estranged now.