A judge ruled on Friday that the Trump administration must return a Salvadoran national, whom it mistakenly deported to a mega-prison in El Salvador, back to the United States no later than Monday night.

Judge Paula Xinis, a federal judge in Maryland, said in an order that Trump officials violated immigration law by deporting Kilmar Abrego-Garcia along with more than 250 alleged Venezuelan and Salvadoran gang members on March 15.