EMBED >More News Videos At least four people were injured in a shooting Wednesday night in the Park Manor neighborhood on Chicago's South Side.

CHICAGO (WLS) -- Five people were shot at a bus stop in Chicago's Park Manor neighborhood on the South Side.Police said a group of people were waiting at the bus stop near West 71st and South State streets just after 8 p.m. Wednesday when several people ran up to them and opened fire. They fled in a getaway vehicle.Four men and a woman were wounded in the shooting. Witnesses inside a nearby corner store ran to help. Morad Alsars was one of them."I got some regular towels and just put them on her head, held them a little bit until the meds came," Alsars said.Mohamed Razek, who works in the store, said the woman who was shot was a regular customer."I know the people by faces. I don't know names, but the lady shot in the face was in my store right there," Razek said.The 32-year-old woman was shot in the head. A 20-year-old man was shot in the chest. They were taken to Stroger Hospital, where they are both listed in critical condition.A 27-year-old man was shot in the left thigh. A 20-year-old man was shot in the arm and back. They were taken to Mount Sinai Hospital, where they are listed in serious-to-critical condition.A 26-year-old man drove himself to St. Bernard hospital and Health Care Center, where his condition stabilized. It is unclear where on his body he was wounded.Investigators are trying to determine a motive for the shooting. The corner store said it does have surveillance cameras that may have captured the shooting, but their recording devices are full.Police did not give a description of the suspects. No one is in custody.