The 42 construction workers arrested at Dulles Airport are still in custody this afternoon. A spokesperson from Homeland Security says all are being held in detention centers in Virginia.

Some family members of the men protested outside ICE headquarters last night, saying they had been unable to talk with their loved ones.

Immigration and Customs Enforcement agents made the arrests about 5.a.m. at a checkpoint for workers entering the airport grounds. Officials say none of those arrested had access to secure areas of the airport.

ICE agents interviewed more than 200 individuals at the checkpoint, according to a statement. Most of those detained worked for a contractor on construction projects at the airport.

"It is crucial to ICE's homeland security mission that we identify who is coming and going from sensitive areas," said Mark McGraw, Deputy Special Agent in Charge for the U.S. Immigration and Customs Enforcement Washington-area Field Office.

Several family members and immigration advocates protested outside of ICE headquarters, demanding the workers receive due process. "They are arresting people who are honest, people who have been building America and they arrest them. What we are demanding right now is that they give a chance to have an attorney."

The nephew of Senon Ortiz was one of the 42 construction workers arrested at the airport. "We want the U.S. government to think before it begins breaking up families and treating hard-working men like criminals."

One woman, who was afraid to be identified, was trying to find her husband. With tears running down her face, she said, "We don't do anything wrong in this country. We just come looking to better our situation."

Those detained are being interviewed, fingerprinted, photographed and entered into Department of Homeland Security databases at a local ICE office, officials said.

But at the airport, many travelers are more concerned about compromised security. Some say the stakes are too high for undocumented workers to have access to sensitive areas of the airport. Arresting agents say there's no indication the workers were involved in any terrorist activity, but that the safety of the airport must be maintained.

Relatives and friends wishing to check on the custody status and detention location of those detained may call ICE's toll-free number, 1-866-341-3858.

Ultimately some may face criminal charges and deportation, and the Dulles Contractor who hired the undocumented workers might also face charges.

A similar raid took place in June 2006 at the airport, resulting in 55 arrests.