An Illinois woman is facing federal charges of forced labor after the F.B.I. raided her home and discovered 33 Guatemalan immigrants, some of whom were made to work and pay thousands of dollars as a debt for helping them stay in the United States, the authorities said this week.

The F.B.I. searched the home of the woman, Concepcion Malinek, in Cicero, Ill., a Chicago suburb, on Tuesday morning after interviewing immigrants who described an abusive living situation in which Ms. Malinek exerted control over their every move, according to a criminal complaint. The authorities said they found 19 adults and 14 children, as well as documents apparently outlining the immigrants’ debts to Ms. Malinek, 49.

The immigrants who spoke with the F.B.I. said that Ms. Malinek, who is a dual citizen of the United States and Guatemala, either helped pay for their plane ticket to Chicago or allowed them to tell immigration authorities that they would be staying at her house after they crossed the United States-Mexico border, according to the complaint. When the immigrants arrived to Ms. Malinek’s home, it said, she told them that they owed her thousands of dollars for her assistance.

Some of the immigrants, who were not named in the complaint, told the F.B.I. that Ms. Malinek charged them for rent, child care and transportation to a factory where she arranged for them to work, according to the complaint. One man said he slept in the basement of Ms. Malinek’s home and that she did not allow them to leave the basement unless they received her permission. The man and his 15-year-old daughter, who lived on the ground floor, were allowed to see each other only for limited periods of time, the complaint said.