The already have:

"Police also arrested the teen and took him to juvenile jail, where Foster said they took photos of the teen’s genitals against his will."

The want ANOTHER picture.

I think what the parties involved intend to do is garner votes, fluff their career, or "just follow orders". What those parties are ignoring, either willfully or otherwise, is that they have to commit child abuse in order to achieve those goals. (And, sure, there are probably a few pedophiles in the chain that are looking forward to the implementation of the Assistant Attorney's wishes.)