The authorities identified the sniper as Rex Whitmire Harbor, 26, of Snellville, Georgia.
He crashed on cars in Gainesville on Friday and left behind three injured people before he shot himself, Hall County Sheriff Gerald Couch said in a statement on Saturday.
Harbor hid in the woods as he waited for the drivers on the side of Georgia, said Couch. He fired at least 17 times and hit seven cars, wounding two men in hips and legs. A third person – a woman – was slightly injured by broken glass, authorities said.
The two men suffered injuries that are not life-threatening and are in a stable condition.
House and Car Search
"He called Nikolas Cruz a" hero "and said Cruz gave him courage and confidence," said Couch.
When the police searched Harbour's car, they found three 9mm handguns, a .22 caliber caliber, a 12 gauge shotgun, and a BB cannon, Couch said.
"In the vehicle, investigators also found about 3,000 rounds of ammunition .22, 350 rounds of 9mm ammunition, and 150 12 gauge shotgun shells," he said.
The first emergency call came just before noon from a car driver who said her husband had been shot, Couch said.
"Almost immediately, more callers reported shots being heard and I advised that other vehicles were hit by bullets nearby," he added. "911 callers also hinted that a second adult male motorist had been hit by a bullet."
authorities closed Georgia 365, a state highway, and set up a perimeter. Minutes later, police discovered a beige Buick Century out of the woods, Couch said. When a deputy with a drawn weapon ran towards the car, the driver drove off on the highway.
After a brief chase, the driver shot himself in the head with a 9mm pistol, Couch said.
"The car went out of control and came to a median halt," he said. "No law enforcement officers fired during the incident."
Cameras took pictures of the gunman who went into the area and took the position to shoot, the authorities said.
Gainesville is located about 60 miles from Atlanta.