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 a Salvadoran prison under accusations they were gang members are the responsibility of the U.S., El Salvador officials told the U.N.

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