A U.S. citizen and Army veteran who works as a security guard at a California cannabis farm said on Wednesday that U.S. officials arrested him during an immigration raid last week and held him for three days without explanation.

George Retes said he was arriving to work when several agents surrounded his car on July 10. Despite identifying himself, he said the agents broke his window, pepper sprayed him, and dragged him out.

One farmworker died after falling from a greenhouse roof during the chaotic raids on Thursday after the Department of Homeland Security executed criminal search warrants at Glass House Farms facilities in Camarillo and Carpinteria, northwest of Los Angeles.