Police have charged 18-year-old Daniel Berkman Fischbeck, who lives on campus.
The investigation began when someone posted the message "To all my friends, don't be in the Pit tomorrow at noon. Things will be getting a big explosive."
The message set off a social media chain reaction with some students considering it a joke and others genuinely concerned for their safety given recent acts of violence at other college campuses.
Fischbeck is charged with making a false bomb report to a public building.
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