Iowa State University athletic director Jamie Pollard on Tuesday accused leaders of the University of Iowa's marching band of leaving through the wrong gate after the Iowa-Iowa State football game this month, which led to a logjam with exiting fans and could have resulted in physical contact.

Pollard said ISU investigators have not been able to substantiate some allegations by Hawkeye Marching Band members of misconduct, including physical assault, by fans at the game. He said that heckling and pelting of band members by fans was "embarrassing" and "inexcusable." But he also said Iowa State band members have been subjected to similar abuse while performing in Iowa City.

Pollard, ISU's president and the university chief of police held a news conference in which they detailed actions they'd taken after learning of the band's allegations.