As many as 100 people could be facing charges following a riot during a Southern California street party.
Authorities say some members of the crowd threw bottles, bricks and rocks at police last night, injuring three officers.
Dozens of party-goers were taken to the hospital.
Authorities used rubber bullets and tear gas to control the crowd after people started setting fires.
The annual party is known as Deltopia and drew an estimated 15-thousand people to the beach community of Isla Vista near Santa Barbara.