A fight broke out during a party at the Garrett Center on Saturday night.
At 12:35 a.m., police were on security detail for the party when they were made aware of a fight that was breaking out.
As one officer was attempting to break the fight up, he received several blows to the back of the head. At that point, the fight started to move from inside the building to outside.
When additional BUPD officers arrived on the scene, they called Peoria police to back them up, according to police reports.
Before city police arrived, BUPD officers attempted to break up smaller fights in front of the building with pepper spray, police said.
Peoria police arrived several minutes later and used pepper-ball guns to disperse the crowd.
About 250 people were in attendance, according to police reports.
According to the statements given to police after the incident, several students from Illinois Central College who were in attendance started the altercation.
According to police reports, the party was co-hosted by Alpha Kappa Alpha Fraternity, Inc. and Kappa Alpha Psi, Inc. Fraternity.