The US government said Wednesday it has located a man wrongly deported to El Salvador and whose whereabouts were previously unknown, adding that he is being held in the country’s CECOT maximum-security prison.

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.

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