President Trump says the the 30,000-person facility for undocumented migrants will house "the worst criminal illegal aliens".

The US has maintained a migrant detention facility there for decades that is separate from the notorious high-security jail for foreign terror suspects, including alleged 9/11 mastermind Khalid Sheikh Mohammed.

Cuban President Miguel Díaz-Canel condemned President Donald Trump's announcement that 30,000 deported migrants would be housed at the Guantanamo Bay Naval base. Díaz-Canel called the move an "act of brutality" and said the base is "illegally occupied" in Cuba in a post to X on Wednesday.

The US president says he will set up a 30,000-person detention facility in Guantanamo Bay to house undocumented migrants.

U.S. President Donald Trump said on Wednesday he will order the Pentagon and the Department of Homeland Security to prepare a migrant detention facility at Guantanamo Bay for as many as 30,000 migrants.

Trump said the move would double U.S. detention lockup capacities, and Guantanamo is “a tough place to get out of.”