CHICAGO — A shooting investigation is underway on Chicago’s West Side after police say a 19-year-old man was shot while driving inside his vehicle.

The wounded man, shot in the 700 block of N. Sawyer in the city’s Humboldt Park neighborhood just before 1:15 p.m., drove to a nearby Aldi and fled into the store for help, police said.

The man suffered a graze wound to the arm but later refused medical attention.

No one is in custody.

Anyone with information may leave an anonymous tip at cpdtip.com.