He said the three victims were standing by a food vendor of some sort and the suspect walked up and shot them "point blank".
Two of the men died at the scene, and the third died while being transported to a hospital.
Great Lakes Dragaway is a dragstrip near Union Grove, Wisconsin, about 32 miles southwest from Milwaukee. The suspect is described as a black man with blue jean shorts, a black hoodie, in his mid-20s, with a black vehicle. All three of the victims are from Illinois, Kenosha County Sheriff David Beth said. Officials said late Sunday that they were still investigating.
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The shooting caused closure of Highway KR between Highway 45 and Interstate 04 for at least three hours as investigators cleared the scene.
The dragaway was evacuated after the shooting.
According to the Dragaway's website there was an event called Larry's Fun Fest being held there on Sunday.
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Wisconsin State Patrol aided authorities in traffic control in both Racine and Kenosha counties.
Quoting Beth, Journal Sentinel reports that the suspect remains at large and authorities are searching for a black vehicle.
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