When I saw the picture of the metal bunks in tiers, my thought was "Alligator Auschwitz," not Alcatraz,' writes an L.A. Times reader.

The exact timing and origin of the incoming detainees remain unclear, but officials confirmed they are being transported to the site by buses.

Florida AG James Uthmeier tweets that hundreds of immigrants will be 'checking in' to the Alligator Alcatraz detention center the night of July 2