a strange story

Alligators inside American rivers.

Two years ago, one man was attacked in a river and nobody know who had been.
The police investigated this river, and they came to the conclusion, that some alligators are living in this river. The people who lived next to ther river was warried.
Nowadays, the alligators are controled.
The people of the village are happy because alligators don't attack anyone.
But, this alligators are gone the American rivers?
Somebody say yes, because their never watch it, but the government say be careful when you enter into the river.