CHICAGO (WLS) — Eighteen people were shot, four fatally, in a mass shooting near a restaurant in River North Wednesday night, Chicago police said.

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The shooting took place at about 11:02 p.m. in the 300-block of West Chicago Avenue in front of the Artis Restaurant and Lounge. Video from the scene overnight shows the chaos as crews rushed to treat the wounded.

Police said a dark-colored vehicle drove past and shots were fired into a crowd of people. The vehicle then fled the scene.

A violence interrupter who was at the scene says the victims were shot as they left an event hosted by a local rapper.

People who live in the area say they heard several gunshots.

Police are still investigating, but a source told ABC7 investigators believe multiple shooters were involved.

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