NBC News investigation: Warning signs prior to New Mexico school shooting may have been missed
03:48
NBC News investigates a 2017 New Mexico school shooting the victim’s family says could have been stopped. The gunman left a trail of hatred online long before he shot and killed two students, and then took his own life. A year before the shooting, he sent a threat causing two FBI agents to question him at his home, where he convinced them it was a sick joke.May 9, 2022
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