April 6, 2014 3:56 PM EDT

A spring-break party near the University of California, Santa Barbara, descended into violence on Saturday as police showered crowds with tear gas.

More than 100 people were arrested throughout the course of the day and evening, and at least 44 people were hospitalized, CBS reports. The police deployed “chemical agents and less lethal foam projectiles” in order “to disperse the crowds,” according to a statement.

The incident began at 9:30 p.m. at an event that drew about 15,000 partyers, who vandalized street signs, lit small fires and damaged law-enforcement vehicles.

Six officers were injured, including a UC Santa Barbara officer who was hit in the back of the head with a backpack containing alcohol and a sheriff’s deputy who was hit in the face with a brick. At least 44 people were hospitalized.

[CBS News]

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