Authorities executed criminal search warrants in Carpinteria and Camarillo, California, on Thursday, the Department of Homeland Security said.

Federal law enforcement officials fired tear gas and rubber bullets at protesters Thursday during a large immigration raid in Ventura County at one of California’s largest and most notable cannabis farms, according to a local mayor at the scene.

Masked federal agents clashed with protestors during immigration raids at two California farms, with agents throwing smoke canisters toward the crowd.