Officials are still investigating a shooting at the Centers for Disease Control and Prevention headquarters in Atlanta, Georgia, that killed a police officer on Aug. 8. The suspect, Patrick Joseph White, 30, may have been disgruntled over vaccine side effects before perpetrating the shooting, according to multiple reports.

Authorities say both a suspected active shooter and a police officer were killed in a gunfight outside an Emory Point CVS, near the CDC and Emory University campus, on Friday afternoon.