The first group of immigrants has arrived at a new detention center deep in the Florida Everglades that officials have dubbed “Alligator Alcatraz,” a spokesperson for Republican state Attorney General James Uthmeier told The Associated Press.

The first group of immigrants has arrived at a new detention center deep in the Florida Everglades that officials have dubbed “Alligator Alcatraz."

Environmental groups have sued to stop the center, arguing it will hurt the environmentally sensitive Everglades.