The first flight carrying migrants to Guantanamo Bay is en route and will arrive Tuesday evening, a U.S. Transportation Command official said.

The first U.S. military aircraft carrying detained migrants to Guantanamo Bay departed on Tuesday, U.S. officials said, as President Donald Trump's administration prepares to potentially house tens of thousands of migrants at the naval base in Cuba.

A U.S. official says the first U.S. military flight to deport migrants from the United States to Guantanamo Bay is set to depart.