Devotees of a man claiming to practice a traditional African religion said they had to ingest the mucus of a Giant African Snail that sickened them.
US authorities in January raided the Miami man's home after receiving complaints.
The man has not been criminally charged, but prosecutors and state and federal wildlife agencies are investigating.
The Giant African Snail is prohibited in the US without special approval.
Experts said it devastates new ecosystems. The snail grows up to 10 inches long, can reproduce on its own and even can even eat plaster.
The man said he meant no harm, and his religion uses the snails in healing ceremonies.
Followers said they got violently ill, losing weight and developing strange lumps in their stomachs.
