GRAND ISLAND — The union representing Grand Island meatpacking workers is renting vans to transport detainees of Tuesday’s federal raid at Swift & Co. back to Nebraska.

Immigration and Customs Enforcement officials rounded up 261 workers at the Grand Island plant during a sweep for illegal immigrants.

The raid was part of an investigation of identity theft by workers at Swift plants in Grand Island; Greeley, Colo.; Cactus, Texas; Hyrum, Utah; Marshalltown, Iowa; and Worthington, Minn. In all, 1,282 Swift workers were detained Tuesday.

But Dan Hoppes, president of United Food and Commercial Workers Local 22, said some of the Grand Island employees have done nothing wrong.

“What we’re finding out is a lot of these folks are not illegal,” he said.

The union is renting vans to pick up workers that are being released from detention at Iowa’s Camp Dodge and bring them home, Hoppes said.

Immigration lawyers, religious leaders, union leaders and social service agents said Wednesday that hundreds of workers, likely from Grand Island, Marshalltown and Worthington, were bused Tuesday to Camp Dodge, which serves as headquarters to the Iowa National Guard.

Tim Counts, spokesman for the Immigration and Customs Enforcement, declined to confirm whether any Swift employees were being held there.