HOUSTON (AP) — A Houston-area couple is accused of forcing a Nigerian woman to care for their five children and home without pay for two years and seizing her passport.

Chudy and Sandra Nsobundu (SUB'-uhn-doh) of Katy were arrested Monday on charges of forced labor, withholding documents, conspiracy to harbor an illegal immigrant and visa fraud.

According to a criminal complaint, the 38-year-old nanny says she was promised $100 per month but has never been paid in her two years in the U.S. She told investigators that the couple physically and verbally abused her.

She was rescued last October following a tip to an anti-human trafficking group.

The Nsobundus face an initial appearance Tuesday in federal court in Houston. Online court records don't list attorneys to speak on behalf of them.