Four people were killed and at least 14 others were wounded in a drive-by mass shooting outside the Artis Lounge nightclub in Chicago's River North neighborhood on Wednesday night. Chicago police said around 11 p.

Fourteen people were injured and four were killed in a drive-by shooting outside a lounge in Chicago's River North neighborhood on July 2, USA TODAY reported. Here's what we know.

Detectives on Friday continued to search for both the shooter or shooters and the motive behind Wednesday night's mass shooting in the River North neighborhood that claimed four lives and wounded more than a dozen others.