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The assailant, identified as a 27-year-old man from Las Vegas, entered the building armed with an M4 assault rifle. He moved through the lobby and onto the 33rd floor, engaging in a rampage that was reportedly targeted rather than random. The suspect ultimately died from an apparent self-inflicted gunshot wound.
Officials noted that the shooter carried a concealed carry license but had no significant criminal record. However, he was known to have a history of mental health issues, raising concerns about underlying motives and the possibility of a targeted attack.