Over 200 migrants who were sent to El Salvador's CECOT mega-prison under accusations that they were members of a violent criminal gang are the responsibility of the United States, the government of El Salvador told a United Nations working group.

El Salvador has said that the United States has legal jurisdiction over deported migrants being held in the Central American country, court documents show. In mid-March, Trump sent 238 Venezuelans and 23 Salvadorans from the United States to the CECOT prison in El Salvador.

The Trump admin has argued that the men are now outside U.S. legal jurisdiction and no longer protected by constitutional rights.