Police in Goodlettsville said a fourth person is now in custody in connection with an attempted homicide.
According to investigators, Dumah Kelly may have been the getaway driver after a shooting at the Retreat Apartments on June 14.
The incident happened on Robert Cartwright Drive around 8 p.m. Police said shots were fired at two victims, and more than 30 shell casings were found at the scene.
Officers said two 18-year-old suspects, Jovontavius Farmer and Madison Wright, turned themselves in not long after the shooting.
Authorities confirmed Tuesday that both Kelly and Dejon Bradley are now in custody.
Police have not provided details on the two victims involved at this time.