The caller believed the vehicle occupants might have been smoking marijuana.
No other officers are hurt and police could not confirm whether or not shots were fired or if any suspects were shot.
Other officers arriving on scene opened fire on the vehicle but it is not known whether any of their bullets struck the auto or a suspect. He died at a hospital, Sgt.
"Efforts are ongoing to locate the suspect responsible", the Gwinnett County Police Department tweeted.
A suspect identified as Isaiah Pretlow, 19, was arrested by the U.S. Marshals Service and was charged with aggravated assault in the death of Officer Antwan Toney, 30, police said at a news conference.
After the shooting, the suspects' four-door black sedan sped away and crashed about a mile away. The suspects initially fled the scene in a black sedan, but they crashed the vehicle less than a mile away and continued their flight on foot. On Saturday, Toney was killed after being shot while responding to a suspicious vehicle parked near a middle school. Pretlow, who was not injured, is facing an aggravated assault charge stemming from that encounter.
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Police are now focusing their search in the Stone Mountain area east of Atlanta.
Police presence was heavy Saturday evening in neighborhoods a few miles east of Stone Mountain. A helicopter was also seeing flying above the vicinity of the middle school. The 30-year-old had been with the department for almost three years. Investigators said the bullet missed the vest worn by the 30-year-old officer.
"Chief Ayers said Toney was considered ".a very jovial person, very dedicated to his job, dedicated to his serving his community".
Gwinnett County is in the metropolitan Atlanta area and has 920,000 residents.
The Gwinnett Police Department noted on twitter that this was Officer Toney's first job as a police officer and that his family is from California.