The complaint in the form of a first information report (FIR) was filed with the state police after the speaker failed to reply to a legal notice sent by the woman's counsel who sought "restitution of conjugal rights" of his client within seven days.
The woman, the speaker's live-in partner of rour years, has accused Rebia of making false promises to marry her since 2011, as well as of cheating, breach of trust and fraud.
news agency repeatedly tried to contact Rebia, elected from Doimukh assembly constituency in Arunachal Pradesh, but was unsuccessful.
A male who answered his mobile phone heard the question from said and immediately disconnected. Since then, no one has been taking calls on that cell phone.
"Nabam Rebia had upheld conjugal relationship with (the lady) from 2011 to 2015 because of which she had to severe all other relations of hers.
However, for a few months you (Rebia) have been avoiding her. Even after persistent reminding, you failed to support her and give her the status of a legally wedded wife," the notice issued to Rebia said.
The woman's counsel Tabing Lamgu said: "There was no reply from Rebia... so we filed a case against the politician. We will fight the case and get him punished."
Counsel alleged that Rebia "assaulted the woman on several occasions" when he was only a legislator and later "repeatedly pressurised her to undergo an abortion".
The woman also charged his family with damaging her reputation by engaging in a "disinformation campaign".