Emotions always run high during the Big Dance, but Arizona students were especially upset after a one point loss to Wisconsin last night.
Tucson police said they shot pepper spray at several hundred fans that threw beer bottles and firecrackers at officers after the 64-63 loss to Wisconsin.
Fifteen people were arrested, but there are no reports of injuries to fans or officers.
According to Tucson police Sgt. Pete Dugan, 14 of the 15 people were later released and one person was sent to jail.
Fans threw beer bottles, cans and firecrackers at local police, prompting officers to use pepper spray, pepper canisters and pepper balls at the fans.
No tear gas was used despite some reports.
A witness, David Kitaeff, told The Associated Press that the incident started innocently with people taking photos, but then "people got in cops' faces."
He said fans were throwing drink cans at officers, whom he saw marching down University Boulevard.
Arizona lost 64-63 to Wisconsin in the West Region final Saturday in Anaheim, Calif.