Charles Bonner and Anthony Hill are accused of shooting 20-year-old Robert Robinson in the head

Charles Bonner, 23, and Anthony Hill, 22, each face a charge of murder and being a persistent felony offender. They are accused of shooting 20-year-old Robert Robinson in the head on Aug. 30. He died the next day. Both Bonner and Hill have been in jail since September when they were arrested for a street robbery, which is still pending in court, said Lt. Barry Wilkerson, head of the Louisville Metro Police homicide unit. During that arrest, a gun of the same caliber as the one used in the Robinson shooting was found in the car the men were in, Wilkerson said. Police also received some tips that indicated that Bonner and Hill might have been involved in the Robinson shooting, prompting police to have ballistics testing done on the weapon, Wilkerson said. Test results, which came back recently, showed that the same gun was used to shoot Robinson, Wilkerson said. Bonner is believed to have been the shooter in the incident, Wilkerson said