At least 148 immigrants arrested in the Swift & Co. raid in December are charged with identity theft, U.S. Attorney General Alberto Gonzales announced Tuesday.

Agents from the Immigration and Customs Enforcement agency raided in December six Swift & Co. plants in six states, including Minnesota. They arrested 230 suspected undocumented immigrants in the company’s Worthington plant.

A week after the raid, authorities charged 19 of the Worthington workers with ID theft. It’s not clear if any of the 148 indictments are new.

“Obviously, we’re concerned about identity theft in this country,