Orlando gunman Omar Mateen was involuntarily dismissed from a Florida Department of Corrections training program after discussing bringing a gun to training class in 2007, NBC News reported.
In new documents provided to NBC News, Mateen's former colleague wrote in a report that Mateen asked him, "if he was to bring a gun to school would I tell anybody."
The Warden of the Martin Correctional Institution, P.H. Skipper, wrote "in light of the tragic events at Virginia Tech officer Mateen's inquiry about bringing a weapon to class is at best extremely disturbing."
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In recommending dismissal in 2007, Skipper referenced Mateen falling asleep in class and at the gun range, but called the comment about bringing a gun to class most disturbing.