By KCRG-TV9 Staff | Posted: Mon 6:40 AM, May 23, 2016

TAMA COUNTY, Iowa (KCRG-TV9) -- Federal authorities have arrested two people in connection with immigration investigations in Tama County.

The Waterloo-Cedar Falls Courier reports it is unclear if the cases against the two are related.

A Homeland Security agent accuses 39-year-old Ismael Ruiz-Zamorano of misusing a Social Security number to obtain a job at Midwest Sleep in Toledo. Investigators said Ruiz used a Minnesota identification card and a Social Security card with the name Juan Ramos to obtain the job. Court records state he signed the Ramos name on employment eligibility documents.

A federal grand jury indicted 31-year-old Elida Yepez-Alvarez for unlawful use of identification documents, misuse of a Social Security number, false claim to citizenship, and aggravated identity theft. She has pleaded not guilty to the charges.

Authorities accuse Yepez of using a forged Missouri identification card and a Social Security number belonging to another person to obtain employment in November 2014. Authorities also accuse her of claiming to be a U.S. Citizen on an employment eligibility form.