At least 10 children in central Alabama were harmed in a harrowing child abuse case, in which they were sex trafficked — some of them by their own parents or other relatives — according to a local sheriff,

Police said seven people have been arrested so far, but more are expected in connection to an alleged child sex trafficking ring in Alabama.

At least 10 children were trafficked for sex acts and held in an underground storm shelter in rural Alabama, a sheriff said.