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2 Young Men Plead Guilty in Harvard Medical School Explosion. "They Do Stupid Things," Attorney Says.

The men admitted entering a neuroscience lab and igniting a commercial firework, and they could face up to 5 years in prison.

  • On Friday, Logan David Patterson, 18, of Plymouth, and Dominick Frank Cardoza, 21, of Bourne, pleaded guilty to conspiracy charges for detonating a large commercial firework inside a Harvard Medical School laboratory last November.
  • The incident occurred around 2 a.m. on Nov. 1, 2025, when Patterson and Cardoza entered the Goldenson Building on Longwood Avenue and detonated a commercial "Roman candle" firework inside a fourth-floor neurobiology laboratory.
  • Investigators identified the pair using surveillance footage and cell phone videos Patterson and Cardoza filmed themselves and showed to friends; officials confirmed the explosion caused no injuries and minimal structural damage.
  • Under the plea agreement, prosecutors recommend three years of supervised release and full restitution rather than prison time, with U.S. District Court Judge Angel Kelley scheduled to issue sentences on Aug. 4.
  • Defense attorneys Stefan Rozembersky and Kevin Reddington characterized the act as "mischief" committed by young men, arguing it was not an attempt to subvert the U.S. government or attack any specific institution.
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NBC Boston broke the news in Boston, United States on Friday, April 24, 2026.
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