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THORNTON, Colo. — One person was killed and four others were injured in an early-morning, three-vehicle crash on Sunday, the Thornton Police Department said.

The crash happened about 1:40 a.m. at Highway 7 and Quebec Street, near Todd Creek Golf Club.

Police said a woman was pronounced dead at the scene and three men and one woman were taken to area hospitals in critical condition. One of the injured was airlifted to a hospital.

Highway 7 was closed between Quebec and Yosemite streets. It reopened just before 12:30 p.m.

The cause of the crash is under investigation, but police said alcohol is suspected.