Police said one man was rushed to the hospital after he flagged down an officer who was on a traffic stop.
The Metro police officer pulled a person over on Harding Pike near White Bridge Pike when a man in a Mazda pulled up.
He told the officer he had been shot in the leg.
Police put him in a patrol car and rushed him to St. Thomas Hospital down the street.
Officers said the victim pulled over at the Shell gas station, but it had nothing to do with the investigation.
It's believed the shooting happened at a different location.
Officers have been trying to figure out where the initial shooting happened.
Crime scene investigators collected evidence from the vehicle.
No other details were disclosed to the media.
Anyone with information on the suspect or crime has been asked to call Crime Stoppers at 615-742-7463.