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John Vallejos

Death by Force
Case Description
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John Vallejos, aged 51, tragically lost his life on October 5, 2011, in a horrific shooting incident at the Lehigh Southwest Cement Permanente Plant in Cupertino, California. Vallejos was one of three victims killed in a rampage carried out by Shareef Allman, a disgruntled employee of the plant. The incident occurred during an early morning meeting to discuss safety issues, where Allman opened fire on his colleagues using a .223-caliber semi-automatic rifle and a .40-caliber handgun. Vallejos, a ...Read More
Links to Additional Sources (8)
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  • The Mercury News: Funerals today for 2 Cupertino cement plant shooting victims
  • Gunman Escapes After Killing 3, Wounding 7 In Cupertino Quarry ...
    •     ...View 6 additional sources
    Victim Details

    John Vallejos

    Male

    Cupertino

    CA

    2011-10-05

    51

    John

    Vallejos

    11/23/2025

    Forum Posts (1)
    I’ve been thinking a lot about the broader effects of workplace violence, especially after learnin... ...Read More
    11/01/2023
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