The Arizona Daily Sun reports officers told a crowd of 600 community members at public forum Tuesday night that the FBI had been responding to each call and has organized a nationwide task force to investigate these and similar threats being made in other states.
Police have no suspects, and can't tell where the calls were made from.
Committing a hoax is a Class 4 felony and could mean up to three years and nine months in jail. If a suspect is arrested, a domestic terrorism charge is also possible.
Information from: Arizona Daily Sun, http://www.azdailysun.com/
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