Good old-fashioned college rivalry is fun, but this is not cool.

The University of Iowa says it has contacted Iowa State after the Hawkeye Marching Band was subjected to “inappropriate actions” during Saturday’s football game between the two rivals according to a WQAD TV article.

The statement, which was sent out by Iowa athletic director Gary Barta on Monday, September 16, did not include details and said only that “we have contacted Iowa State athletics administration and are working to gather additional information.”

Iowa rallied to beat Iowa State 18-17 at Jack Trice Stadium after a game that lasted nearly 6 ½ hours after a pair of weather delays. Some fans from Iowa State’s student section ran onto the field during the second interruption before being sent back by security.

Iowa’s band, like the team itself, was booed heavily by the Iowa State student section when it entered the stadium before kickoff.