A man who opened fire at a Georgia elementary school Tuesday was armed with an AK-47 "and a number of other weapons," police said. The shooter barricaded himself in the school's front office with employees before eventually surrendering to police, DeKalb County Police Chief Cedric Alexander told reporters. No one was injured, authorities said.

Suspected shooter Michael Brandon Hill, 20, faces charges including aggravated assault on a police officer, terroristic threats and possession of a firearm by a convicted felon, police spokeswoman Mekka Parish said.

The shooter fired about six shots from inside the school toward officers as they approached outside, Alexander said, and police returned fire.