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(Iowa) -- Multiple police departments across the state are investigating false threats at more than 30 schools Tuesday.
Schools in the following areas received threats:
- Polk County
- Story County
- Cerro Gordo County
- Cedar Rapids
- Iowa City
- North Liberty
- Clinton
- Muscatine
- Davenport
Iowa Department of Safety Commissioner Stephan Bayens says the calls are fake, and there's no evidence that any of the reported threats are credible.