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.

A U.S. Army veteran arrested during an immigration raid at a California marijuana farm says he was sprayed with tear gas and pepper spray before being dragged from his vehicle on his way to work.

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