An annual celebration at Iowa State University has gotten out of hand with a rowdy crowd overturning cars and knocking down light poles, seriously injuring one student.
Police say the crowd began massing late last night in the Campustown area in Ames and started pelting officers with rocks and beer cans.
People in the crowd overturned at least two cars and knocked down two light poles, and one pole apparently struck a student.
Police say the injured person eventually had to be airlifted to a Des Moines hospital.
University President Steven Leath says his university cabinet will gather later today to evaluate options for the remainder of the week's activities for the annual Veishea celebration, one of the oldest campus traditions, showcasing a variety of educational and entertainment events.