The Trump administration has flown all of the migrants it had held in Guantánamo Bay out of the facility there, NBC News has learned from three sources familiar with the operation and flight data.

A transfer operation on Thursday repatriated 177 Venezuelans via a handoff in Honduras, while one migrant was brought back to U.S. soil.

DHS said Venezuelan migrants who had been detained at the Guantánamo Bay Naval Station have been flown to Honduras and will be transferred next to Venezuela.

The Trump administration says 51 of the 178 Venezuelan nationals taken to Guantanamo Bay have been designated as "low-threat illegal aliens."

Officials at the Department of Homeland Security and the Defense Department are racing to set up multiple tent facilities in Guantanamo Bay, Cuba, to house thousands of migrants, but the scattered efforts have prompted questions internally about who’s in charge and what will happen once people arrive on site.

The U.S. government deported 177 Venezuelan migrants from Guantanamo Bay to Honduras, where they are set to be returned to Venezuela. The move has sparked controversy, as many were taken to the naval base without legal representation.

U.S. immigration and military authorities say they have transferred exclusively Venezuelan immigrants who are subject to final deportation orders to the U.S. naval station at Guantanamo Bay, Cuba, where nearly 180 new arrivals are being held in tents and high-security facilities,