Police have identified a sixth suspect but have not yet obtained an arrest warrant. The suspects are facing charges of inciting a riot, engaging in a riot and criminal mischief.
Criminal mischief is a class-four felony and is the most serious of the charges.
If convicted, the suspects could be sentenced for up to six years in prison on that charge alone. The four suspects arrested, all University of Colorado students, also will face the university's judicial affairs process. Those arrested admitted to only limited roles, and only after police obtained their photos and tips related to their actions, police said. Some people in the crowd began throwing rocks and bottles at officers. They then set a large bonfire in the street, fueling it with couches, newspapers and other combustible items.