Overview

• Medical examiners will analyze Tamura’s brain tissue to confirm whether chronic traumatic encephalopathy influenced his motive
• Police found 47 spent casings at 345 Park Avenue and uncovered more than 800 additional rounds and a .357-caliber pistol in Tamura’s BMW
• Tamura evaded layered security—locked turnstiles, off-duty NYPD officers and reinforced safe rooms—before killing four people in Rudin Management’s 33rd-floor offices
• Julia Hyman, a 27-year-old Rudin associate, was shot after briefly leaving a fortified panic room, highlighting risks in emergency shelter designs
• Security consultants and tenants are implementing tailored risk assessments and simple “Run, Hide, Fight” drills to bolster office preparedness