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WASHINGTON, D.C. (USA TODAY) -- A Georgetown University student was charged on Friday with possessing a lethal amount of ricin after admitting he made the poison in his campus dorm room.

Daniel Harry Milzman, 19, of Bethesda, Maryland, allegedly showed off a bag of homemade ricin to his dorm adviser, who notified school authorities. The school contacted police, and testing confirmed the substance was ricin, a court document showed.

The FBI affidavit said he learned how to make ricin on his iPhone and then bought ingredients at retail stores.

"Based on our investigation, we do not believe there is any connection to terrorism," said Andrew Ames, a spokesman for the FBI's Washington Field Office told The Washington Post. He declined to discuss Milzman's motivation for possessing the toxin.

"There is no immediate threat to members of the Georgetown community," a press release from the university stated. "Anyone exposed to ricin would have presented with severe symptoms within 24 hours. This window has passed and there are no reports consistent with ricin exposure."

Contributing: The Associated Press

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