The new case, which for now is asking for a court to block the transfer of 10 men to the offshore base, is the first to directly challenge the policy.

The administration flew almost all of the migrants it had held in the facility in Cuba to Honduras, and one to detention in the U.S., NBC News has learned.

Attorneys filed a lawsuit against the Trump administration Saturday to halt the transfer of 10 migrants detained in the U.S. to Guantánamo Bay Naval Base in Cuba. This marks their second legal challenge in under a month against plans to use the facility for large-scale immigrant detention before deportation.

The base had been cleared of migrants since Thursday, after the government sent 177 to Venezuela and one back to the United States.

The lawsuit says there is no legitimate reason to send migrants to Guantánamo because the U.S. has ample detention facility.

Civil rights attorneys have filed a lawsuit against the Trump administration to prevent the transfer of undocumented immigrants from the United States to Guantánamo Bay, Cuba

The 10 men involved in the lawsuit came to the U.S. in 2023 or 2024, seven from from Venezuela, and the others from Afghanistan, Bangladesh and Pakistan.