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It happened along Rock Quarry Road at Bart Street, just north of MLK Boulevard.
Police initially said 25-year-old Derrick Orlandius Hinton Jr's injuries were so serious they were unable to determine whether he had been shot as well as struck by a car, but later determined he was the victim of a hit and run.
The car that hit him was described as a 2005 Cadillac that now has front-end damage.
Police are looking for the car and the driver.