WASHINGTON (AP) — At the signing of the Laken Riley Act, President Donald Trump said Wednesday that he is directing the opening of a detention center at Guantanamo Bay, Cuba, to hold up to 30,000 migrants who are living illegally in the United States and cannot be deported to their home countries.

Trump made the announcement just before he signed the immigrant detention measure, the first law of his new administration.

“We’re going to send them out to Guantanamo,” the president said in the White House East Room. He did not elaborate.

The U.S. military base has been used to house detainees from the U.S. war on terrorism.

The Laken Riley Act was described by Trump as a “landmark law” and “tremendous tribute” to the slain Georgia nursing student for whom it is named. The law mandates that people in the U.S. illegally who are accused of theft and violent crimes be detained and potentially deported, even before a conviction.

Laken Riley, 22, went out for a run in February 2024 and was killed by Jose Antonio Ibarra, a Venezuelan national who was in the country illegally. Ibarra was found guilty in November and sentenced to life without parole.

“She was a light of warmth and kindness,” Trump said during a signing ceremony that included Riley’s parents and sister. “It’s a tremendous tribute to your daughter what’s taking place today, that’s all I can say. It’s so sad we have to be doing it.”

He added, “It’s a landmark law that we’re doing today. It’s going to save countless lives”