BOSTON — A federal judge wants to know why a doctor from Lebanon with a U.S. visa was deported, after he ordered that she not be removed until he could hear her case.

Dr. Rasha Alawieh, 34, had been granted the visa on March 11 and arrived at Boston Logan International Airport on Thursday, according to a complaint filed on her behalf by a cousin in federal court.

Alawieh, who had worked and lived in Rhode Island previously, was detained at least 36 hours, through Friday, and was going to be sent back to Lebanon, the complaint said. Alawieh, a kidney transplant specialist, was to start work at Brown University as an assistant professor of medicine.