They are starting to find them everywhere. They should go to the Apple orchards in Yakima, Orange groves in Florida and anywhere else that has mass amounts of el’ manual labor to do.

SEATTLE, WA - U.S. immigration officials Wednesday arrested 51 immigrants at two UPS warehouses in Auburn where authorities believe they were illegally employed.

The workers, from Mexico, Guatemala and El Salvador, were being held at the Northwest Detention Center in Tacoma while their immigration cases are reviewed and processed.

The workers were discovered after Immigration and Customs Enforcement (ICE) agents audited the employment records of UPS Supply Chain Solutions, a UPS subsidiary that operates the warehouses, and of Spherion, a temporary-employment agency that helped staff the facilities.

Officials said the audit showed several workers had used counterfeit identification documents, including fraudulent Social Security numbers, to get jobs.

ICE spokeswoman Lorie Dankers said that while most of those arrested had been placed by Spherion, headquartered in Fort Lauderdale, Fla., some told agents they had been placed at UPS by other employment agencies. None of the companies has been criminally charged, and ICE is continuing its investigation, Dankers said.

Kip Havel, Spherion spokesman, said the company is “taking this matter very seriously. We are looking into the situation and fully cooperating with authorities.”