In a 2022 911 call, Shane Tamura’s mother expressed deep distress—reporting that he was under a doctor’s care for depression, sports-related concussion symptoms, chronic migraines, insomnia, and that he kept a firearm in his backpack; she said he had threatened suicide and she feared staying with him too long (turn0news27). Authorities disclosed the calls alongside extensive police records, including evidence of two mental health hospitalizations (2022 and 2024), underscoring a longstanding struggle with mental health and brain injury concerns that tragically preceded the shooting.