A prominent Islamic scholar who has battled accusations of extremist beliefs has been arrested along with his wife on federal charges that they married other people to get U.S. citizenship.

Ibrahim Abdelrahman Dremali and Safaa Rashad Eissa were arrested by immigration agents, Arlington police and the FBI on Oct. 6 on a warrant out of Des Moines , Iowa . They were released on their own recognizance after appearing before a federal judge in Fort Worth the same day.

They are scheduled to enter pleas Nov. 12 in Iowa on charges of conspiracy to defraud the United States, which can carry a five-year sentence, and procurement of citizenship or naturalization unlawfully, which can result in 10 to 25 years in prison.

Dremali, who earned degrees in geology and Islamic law in Cairo , immigrated to the U.S. in 1989 and has served as an imam, or Muslim spiritual leader, in south Florida, Iowa and Austin and worked at Islamic schools.