Police said one gang member shot another after both had just left a meeting at the mayor's office aimed at quelling gang violence.
Kevin Dewayne Bush was arrested for shooting Keyshawn Kidd on May 29.
Bush, 20, of 17th Street, is charged with attempted first-degree murder, reckless endangerment and unlawful possession of a firearm.
Police said Kidd was returning to his residence on Hawthorne Street when a vehicle pulled up next to his and someone started shooting at him.
Police located two different kind of shell casings (9mm and .40 caliber) at the scene.
The vehicle occupied by Kidd had bullet holes in it.
Police executed a search warrant at the residence of Bush and found a Glock .40 caliber handgun.Tests are being conducted to determine if the Glock and shell casing match up.
Police said Bush was on state probation at the time and was wearing a GPS ankle monitor. GPS data showed Bush attending the same gang meeting as Kidd. It shows Bush leaving the meeting at 11 a.m. and traveling to the Kidd residence. It shows him there at the time of the shooting.
Police said Bush's brother, Steven Bush, said the Glock belongs to him, but that Kevin Bush had access to it.
Police said Kevin Bush is a validated Gangster Disciple gang member.