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Chicago TribuneA postage stamp, a fingerprint and a Google search helped lead authorities to arrest a West Rogers Park man Friday on a charge he mailed a bomb threat to a Jewish school in late December.
Forensic investigators matched a fingerprint from the letter's envelope to Mohammed Alkaramla, authorities said.
During a search of Alkaramla's apartment last month, agents also found a book of postage stamps—bearing a design of two swans forming a heart shape, the same design as the stamp on the bomb threat letter. That particular stamp hadn't been produced in more than a decade, and the book found in a dresser drawer was missing one stamp, charges say.
Agents also seized a laptop computer from Alkaramla, and subsequent analysis of the computer's hard drive found the text of the threat letter and Google search terms such as "Bomb attack + Israel + letters," authorities said.
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