The man shot after trying to defuse a road rage incident is hospitalized in critical condition as the search for his shooter continues.

The dust-up took place Monday morning, July 22, near the intersection of Rockbridge Road and South Indian Creek Drive around 8:15. The victim was actually a pedestrian bystander who stepped in to try to calm down the occupants in each of the vehicles.

"One of the vehicles drove off and turned around and came back. A passenger in that vehicle got out and fired several shots at the victim, striking him in the head. That vehicle then fled the scene," says DeKalb County Police Sgt. Jacques Spencer.

"Apparently he was just walking down the street and observed the altercation between the occupants of the two vehicles and attempted to intervene to try to squash the argument. He was shot for trying to do the right thing and help out," Spencer says.

Eyewitnesses helped investigators with a license plate number. The car was tracked to a neighborhood nearby, on Tallwood Drive, and DeKalb County's SWAT team went in to serve a warrant, arresting 23-year-old Aden Osman Bouh inside a home there. Bouh is the driver of the vehicle involved in the shooting. He is charged with aggravated assault.

The gunman remains at large.

"Anyone that would shoot someone else has no regard for human life and needs to be arrested and put in jail," says Spencer. "Anytime especially someone who was just trying to help is injured, it's very bad, when someone's trying to do the right thing and they end up getting shot for it."

Spencer says a second man near the intersection was detained because he was initially thought to have possibly been involved in the crime. Osmiel Williams was not, but was arrested for possessing a felony amount of narcotics.

The victim's name is not being released for his safety, since the shooter is still on the loose.

The details of what led to the road rage argument are still under investigation.