The incident happened around 12:30 a.m. on the 2600 block of South Dewey Street.
Police say two women in a car were stopped at the location when a man, armed with a gun, opened the passenger side door and attempted to rob the victims.
An unidentified man then came from behind the suspect and opened fire, striking him several times along with several parked cars.
The shooter then fled the scene, leaving the robbery suspect critically wounded.
The two women were not injured and are being questioned by the police.