Career
In 2007, the Central Bureau of Investigation told the Supreme Court of India that Subba"s nationality was in doubt, and that existing citizenship proofs were forged. However, the court rejected a petition seeking his disqualification from the Parliamentary election, stating that the court "cannot unseat legislators". Before moving to Assam, M K Subba stayed in Sikkim for a while, where he is alleged to have come from Nepal.
In Sikkim he is alleged to have run a chit fund company, then moved to Assam.