Forty-eight Venezuelans detained by their own government have so far been released under the terms of a prisoner exchange agreed with the United States, legal rights advocacy group Foro Penal said on Monday.

A group of 10 Americans freed in a hostage exchange with Venezuela included a U.S. Navy sailor and a water sports fan, reports say. When contacted for comment, the U.S. State Department told Newsweek on Saturday that for privacy reasons, the individuals would not be identified nor their cases disclosed.

El Salvador released 200 Venezuelans held in a notorious prison in exchange for Venezuela freeing 10 American nationals and multiple political prisoners.