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.
Stocks, dollar extend slide as US-North Korea tensions intensify
Mining heavyweights BHP Billiton and Rio Tinto retreated 2-3%, while gold miners Evolution and Newcrest rose about 2% each. At noon, the dollar fetched 109.88-89 yen compared with 110.26-36 yen in NY and 110.58-60 yen in Tokyo at 5 p.m.
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.
Dow plummets 205pts as Trump inflames Korea tension
The CBOE Volatility Index, the market's fear gauge, hit a nine-month high after sinking to an all-time low in late July. Euro zone stocks and blue-chips also dropped 0.9 per cent, while the miner-heavy FTSE fell 1.1 per cent to 7,309.96.
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.
Chinese Vice Premier in Islamabad to attend Pakistan's I-Day
Wazir Mansion, known as 'Quaid-e-Azam Birthplace Museum, ' was a family home of Jinnah in the district Kharadar of Karachi, Sindh. The day will dawn with thirty-one gun salute in the federal capital and twenty-one gun salute in the provincial capitals.