CHICAGO (WLS) -- Two girls, ages 11 and 17, were wounded in a shooting in the West Pullman neighborhood on the South Side Sunday night, police said..The shooting occurred while both girls were standing outside in the 11700-block of South Perry Avenue at about 10:25 p.m. Police said a white vehicle drove by and someone inside fired shots, hitting the girls.Both girls were transported to Stroger Hospital. The 11-year-old girl was wounded in the chest and is in serious condition and the 17-year-old girl was shot in the right hand and elbow and her condition has stabilized.Area South detectives are investigating the shooting. No one is in custody and police said the shooting may have been gang-related.The shooting comes as Chicago Police Superintendent Eddie Johnson announced 1,400 more police officers would be on patrol this Labor Day to try and crack down on the violence. Johnson said additional resources would be deployed all across the city.