India, Nov. 14 -- PEORIA, Illinois - The call came into Peoria police on Friday afternoon: a bomb threat at an ethanol plant on the city's waterfront. Within hours, more than 5,000 people were gone from their homes, a country music concert had been cancelled, emergency shelters had opened across two cities and the FBI was on scene at one of the most significant domestic bombing incidents in Illinois's recent history.

A bomb was found at an ethanol plant in Illinois, prompting authorities to evacuate people living nearby as police searched the facility, officials said on Saturday. Authorities found the device Friday at BioUrja Renewables, an ethanol plant in Peoria. Officials deemed it a credible threat, and Peoria Police Chief Brad Dixon...