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Investigators Probe CTE Claims and Red Flag Law Gaps After Midtown Rampage

Officials have opened new lines of inquiry into Tamura’s head injury treatment alongside a review of Nevada’s high-risk protection order law.

In an image obtained by CNN, Shane Devon Tamura is seen outside the 345 Park Avenue office building carrying a rifle.
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NYPD sent this alert – showing Tamura walking across 345 Park Avenue's outdoor plaza carrying his rifle – to NYPD-issued phones as officers responded to the building.

Overview

  • The NYPD, FBI and federal prosecutors are interviewing medical experts and reviewing Tamura’s antipsychotic prescription records as they investigate his alleged CTE diagnosis.
  • Nevada authorities have launched a formal assessment of the state’s high-risk protection order law after learning that mental health crisis holds did not trigger any firearm restrictions.
  • Investigators recovered additional suicide notes, a rifle tripod and antipsychotic medications from Tamura’s Las Vegas residence, and are tracing his firearm purchases from Nevada to New York.
  • Experts caution that CTE can only be confirmed postmortem and warn against assuming a direct link between traumatic brain injuries and acts of violence.
  • Commercial tenants and security consultants at 345 Park Avenue are strengthening active-shooter procedures after identifying lapses that allowed the gunman to bypass entry checkpoints.