Deadly shooting shuts down I-85 in Midtown Atlanta

Atlanta police are trying to find the gunman who shot two people in the middle of Interstate 85 early Wednesday morning. One man was killed and another was rushed to an area hospital after that shooting near the Buford Highway.

An off-duty Jonesboro police officer saw the scene just north of the Brookwood Interchange just after 5:10 a.m. Officer Daryll Triplett was on his way into work when saw the man in distress after what initially he thought was a car accident. He quickly discovered it was a deadly shooting.

"There were three male Blacks. One of them was flat on his back. Another male black was administering CPR to him and a third male black was in the driver's side rear of the vehicle. He had been shot in the leg. The guy that was giving CPR ran up to me and said the driver had been shot," Officer Triplett recalled.

The officer quickly called 911 and began asking the other man what happened.

"They were driving on the highway there and another vehicle pulled up next to them, shot in their vehicle, and pulled off," the officer said.

Police confirmed a man was found shot in the head in the roadway near the high-occupancy vehicle lane close to the exit ramp to Interstate 75. 

The second man, who also suffered from a gunshot wound was taken to an area hospital in stable condition.

The Atlanta Police Department brought in K-9 units to search for the missing third man and the possible shooter. That third man left the scene before first responders arrived at the scene and police said he was later located uninjured.

All southbound lanes of Interstate 85 were shut down at Buford Highway for about four hours while investigators worked the scene.

Police have not yet released the identity of the victim or the circumstances surrounding the deadly shooting.

If you have any information about the shooting, please call the Atlanta Police Department.

WATCH: FOX 5 Atlanta live news coverage

Download the FOX 5 Atlanta app for breaking news and weather alerts.