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Maryland Man Arrested for Threats to Philadelphia Jewish Museum

  • Federal authorities arrested Clift A. Seferlis, a 55-year-old Maryland tour guide, on June 17 for sending threatening letters to Philadelphia-area Jewish institutions.
  • Seferlis allegedly sent these threats over 18 months from New York to Washington, D.C., including a May 7 letter to the Weitzman Museum referencing Kristallnacht and accusing leaders of ignoring Gaza’s situation.
  • Seferlis acknowledged to FBI agents that he was responsible for the letters and revealed he had previously conducted tours at the museum, with intentions to lead another tour shortly after his arrest.
  • He was granted release after posting a $50,000 bail and was subjected to electronic monitoring, restrictions on travel, a prohibition from entering Jewish institutions, and an order to relinquish any firearms, according to the U.S. Attorney’s office.
  • The arrest follows heightened security at Jewish sites after recent antisemitic attacks, including the May 21 shooting outside Washington’s Capital Jewish Museum that killed two Israeli embassy staffers.
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Philadelphia Magazine broke the news in on Monday, June 23, 2025.
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