The Trump administration violated a previous court order when it deported at least six migrants to South Sudan, a federal judge ruled Wednesday.

Eight people from Myanmar, Laos, Vietnam, Cuba, Mexico and South Sudan were on a flight reportedly intended for South Sudan this week.

A federal judge ruled on Wednesday that the U.S. government violated his court order by attempting to deport migrants to South Sudan, opening another front in a battle between Donald Trump and judges who have imposed checks on the Republican president's hardline immigration policies.