(USA TODAY) Six police officers were injured, more than 100 people were arrested and dozens were hospitalized when a large spring break party near the University of California-Santa Barbara turned into an unruly civil disturbance, officials said Sunday.

Police used tear gas and what they described as “foam projectiles” to regain control of the rock and bottle-throwing crowd.

An estimated 15,000 people attended the all-day party Saturday at Isla Vista, a beach community that borders the UC-Santa Barbara campus, the Santa Barbara County Sheriff’s Department said. The annual spring party is called “Deltopia.”

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