Police issued a community alert Tuesday night along with a mug shot of Dionisio Gonzalez. Police are asking anyone who sees Gonzalez to call 911.
The girls were shot last Wednesday in the 3500-block of W. School Street on the Northwest Side.
Investigators say it was a gang-related shooting. The girls were not the intended targets.
Last Friday, police arrested and charged Antonio Bucio, 22, in connection with the shooting.