Police are releasing few details of the robbery at Jack Trice Stadium on the Iowa State campus in Ames, which occurred Saturday as Iowa defeated Iowa State, 27-21.
Nine people reported cash and cellphones missing from the Iowa locker room, which is adjacent to the stadium, The Des Moines Register reported Monday.
"There was no forced entry," Darin Van Ryswyk of the Iowa State University police said, leading to conjecture, the newspaper said, whoever stole the items may have had credentialed access to the Iowa locker room.
A statement from the school said the amount of cash reported missing was approximately $50.
The crime scene was a mass of Iowa football players, coaches and staff after the game, the newspaper noted.
"It was very hectic, as you would expect in a crowded locker room. It was difficult to do a lot of investigating after the game. It's not a scene where we can just lift fingerprints," Van Ryswyk said.