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.

On Feb. 7, he and other Venezuelan men in ICE detention in El Paso were awakened and told they were going back to Venezuela, Purroy Roldan said. They were transported to Miami and put aboard a military plane – and realized they were actually going to Guantanamo.

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

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.

Civil rights attorneys are suing the Trump administration to prevent it from transferring 10 migrants detained in the U.S. to Guantanamo Bay, Cuba

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

Immigrant rights groups sued the Trump administration on Saturday in hopes of stopping the transfer of migrants from the U.S. to Guantanamo Bay.

Civil rights attorneys sued the Trump administration Saturday to prevent it from transferring 10 migrants detained in the U.S. to Guantanamo Bay, Cuba, and filed statements from men held there who said they were mistreated there in conditions that of one of them called ''a living hell.