Lawyers for the immigrants, who aren’t from South Sudan, contend the deportations violate a court order after a previous attempt to send some people to Libya.

A federal judge ruled late Tuesday that U.S. officials must retain custody and control of migrants apparently removed to South Sudan in case he orders their removals were unlawful.

Attorneys for Vietnamese and Burmese migrants alleged in a new emergency motion Tuesday that the Trump administration deported their clients to South Sudan in violation of a previous court order.