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Brown University custodian says he reported gunman multiple times before shooting

Custodian Derek Lisi reported seeing the suspect over a dozen times and alerted campus security multiple times before the Dec. 13 shooting that killed two students and injured nine.

  • Derek Lisi, a custodian at Brown University, said he reported a suspicious man multiple times before the shooting that killed two students and injured nine others on December 13.
  • Lisi claimed he alerted a third-party security company about the suspicious man three times, but nothing was done.
  • The suspect, Claudio Neves Valente, is also accused of killing an MIT professor, Nuno Loureiro, with whom he had previously studied in Lisbon.
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Bias Distribution

  • 56% of the sources are Center
56% Center

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PJ Media broke the news in on Monday, December 22, 2025.
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