Find anything bad - close and demolish the mosque, repatriate all the members plus extended families to their hereditary country. Let 'home grown' members choose their country.
Job done.
I’d guess Muzzies cleaned house after the attacks anticipating a search but OOPS! missed some details.
Mosques are armories. Iraq proved that.
This was clearly a job for the Waco PD. They could have tripled that number easy.