It happened around five o'clock Tuesday night.
Antonio Young, 26, was taken to the hospital for treatment of a gunshot wound to the lower leg police described as not life-threatening.
Officers first called to the scene learned from witnesses that the disturbance started after a man in a crowd of people criticized a woman who was wearing "blue colors," according to the incident report.
The crowd then reportedly jumped on the woman's brother when he tried to defend her.
At one point, the woman said one of the men in the crowd tried to run over her in a Silverado pickup truck before more people jumped on her brother and one of them started shooting.
When she heard the shots, the woman ran from the scene, along with her sister and brother (Young) but they lost sight of him.
Young was found not far away at a home on South Bragg Street, and taken to the hospital.
A search in the area for the pickup truck led officers to a home on South Rock Street, but the man the truck belonged to was not there.
The shooting suspect was described by police as a light-skinned black man, 5'7" tall and weighing about 165 pounds. Further description says he's believed to be 28 to 31 years old, with long dreads. He was wearing a white shirt and blue jeans, police said.
Detectives found .40-caliber shells scattered on the ground inside the park and collected them for evidence.
*Pettaway Park is south of East 21st Street, between Commerce and Bragg streets.