1 p.m.: Silverthorne Police Department Assistant Police Chief Eric Streep said Silverthorne officers have not been involved in the immigration enforcement activity. He said Silverthorne officers are easily identifiable and added that his department received no notification from federal agencies about enforcement activities on Thursday, Sept. 25.

12:38 p.m.: A U.S. Immigration and Customs Enforcement spokesperson, who declined to be identified, issued a statement to Summit Daily News that declined to “confirm, deny, or otherwise discuss ongoing or future operations, citing law enforcement safety.

“U.S. Immigration and Customs Enforcement is executing its mission of identifying and removing criminal aliens and others who have violated our nation’s immigration laws,” stated the U.S. Immigration and Customs Enforcement spokesperson. “All aliens in violation of U.S. immigration law may be subject to arrest, detention and, if found removable by final order, removal from the United States, regardless of nationality.”

The agency said it will not provide any details on alien arrests unless “a name, DOB and/or alien registration number” is provided.

Noon: Voces Unidas CEO Alex Sanchez said at least five people were detained while on the way to a job site near Dillon on Tuesday morning and were stopped while driving near Super 8 hotel and the Shell gas station. Sanchez said his organization spoke with several witnesses and a family member of someone who was detained to vet the information. Sanchez also said at least one person was detained in a separate interaction around 7 a.m. at the Dillon Valley East Apartments. Summit Daily News was unable to independently confirm these detainments.

10:30 a.m.: The U.S. Marshals Service has agents in Summit County assisting U.S. Customs and Immigration Enforcement with an operation involving multiple federal agencies that began on the morning of Thursday, Sept. 25. 

“(U.S. deputy marshals) are assisting immigration enforcement operations teams,” an employee of the Denver office, who declined to disclose their name, told Summit Daily News around 10 a.m. 

The U.S. Marshals Service employee said U.S. Customs and Immigration Enforcement is the lead agency in the operation and declined to provide further details since the operation is “ongoing.” U.S. Customs and Immigration Enforcement, commonly called ICE, is the principal investigative arms of the U.S. Department of Homeland Security.

Voces Unidas President and CEO Alex Sanchez said his nonprofit has received reports of people being detained while in route to a construction site near Dillon, and through speaking with witnesses, the organization believes at least three people were detained. Summit Daily has not been able to independently verify those detainments.

Photos and videos in Facebook groups the morning of Thursday, Sept. 25, show unmarked vehicles and people wearing masks seemingly detaining people in the Dillon Valley area.

Summit County Sheriff’s Office Lt. Mike Schilling said around 8:30 a.m. that the office has not received notification from U.S. Homeland Security of any federal immigration enforcement activity in Summit County on Thursday. Schilling said around 10:20 a.m. that his office was still unaware of any immigration enforcement activity.

“Well holy s***, that’s news to us and we have spent the whole morning trying to chase this down just like you,” Schilling stated in response to Summit Daily News sharing the information it received from the U.S. Marshals Office. “It seems like the norms change daily right now with federal law enforcement. We still have no confirmation from ICE on anything today.”

Schilling said the office has received reports of the activity from the community. He said Homeland Security notified the Sheriff’s Office through the county dispatch service about its operations Sept. 16 when those operations began in Frisco and Dillon Valley.

Dillon Police Department Chief Cale Osborn confirmed his agency is not involved with the operation.

Multiple attempts to reach U.S. Immigration and Customs Enforcement and U.S. Homeland Security Investigations were unsuccessful, and voicemails and emails sent to the Homeland Security agencies have not been responded to as of 10:30 a.m. Thursday.

Editor’s note: Summit Daily News editor Andrew Maciejewski and reporter Kyle McCabe contributed to this report. This story was updated to clarify the location of a suspected detainment.