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KANSAS CITY, Mo. (AP) — Police in Kansas City, Missouri, say at least two people are dead and 15 people were reportedly injured in a shooting outside a bar.

The shooting took place shortly before midnight Sunday, Kansas City police said at a press conference at the scene. A police spokesman said responding officers found “a chaotic scene” and had to call in help from around the city. Two people were found dead, including a woman in the parking lot.

Police believe the shooter is one of the deceased. The spokesman said the shooter opened fire on a line of people waiting to enter a bar, but the motive for the shooting wasn’t immediately clear. The shooter was shot by an armed security guard, police said.

During the investigation, police heard that people — at least 15 — were showing up to local hospitals with injuries from the shooting. At least three people were in critical condition, police said.

The scene was near U.S. Highway 40. News outlets at the scene identified the bar outside which the shooting took place as 9ine Ultra Lounge. A Facebook post on the club’s page advertised Sunday night’s “Sold Out Sundays” event, which appeared to be a celebration of the Kansas City Chiefs. The Chiefs — featured on the event’s artwork — beat the Tennessee Titans on Sunday to advance to the Super Bowl.