CDC security guards stopped White from driving into the campus on Friday before he parked near a pharmacy across the street and opened fire from a sidewalk. The bullets pierced "blast-resistant" windows across the campus, pinning employees down during the barrage. More than 500 shell casings were recovered, the GBI said.

Authorities also confirmed that they had recovered "written documentation that expressed the shooter’s discontent with the COVID-19 vaccinations."

The man suspected of opening fire outside the Atlanta headquarters of the Centers for Disease Control and Prevention on Friday had been critical of the Covid-19 vaccine, authorities said.A search of Patrick Joseph White’s home revealed written documents in which he indicated his discontent with the vaccine,