U.S immigration agents raided the construction site of the federal courthouse in Richmond on Wednesday and arrested 33 workers alleged to be in the country illegally, according to the Richmond Times-Dispatch.

Workers arrested came from El Salvador, Guatemala, Honduras, Mexico, Nicaragua and Peru. They could not produce documents showing they could work legally in the U.S.

A spokesman from Turner Construction Co., parent company of the builder of the project, told the Times-Dispatch that the workers who were arrested were employed by subcontractors on the site, and none were employees of Turner.