The illegal alien accused of murdering 20-year-old college student Mollie Tibbetts used an alias to appear to be working legally in the United States at a dairy farm.

Last month, law enforcement announced that Tibbetts’ body was found in a cornfield in her rural hometown of Brooklyn, Iowa after she was last seen jogging on July 18.

Illegal alien Cristhian Bahena-Rivera, a 24-year-old from Mexico, has been charged with first-degree murder in her death after police say he admitted to confronting and chasing down Tibbetts. The illegal alien lived in a region of Iowa that was surrounded by sanctuary cities, as Breitbart News noted, and an initial autopsy report revealed that Bahena-Rivera allegedly stabbed Tibbetts to death.

A new report from the Associated Press (AP) reveals that Bahena-Rivera used the alias “John Budd” to work on the Yarrabee Farms dairy farm, a potential stolen ID. The dairy farm says they hired the illegal alien in 2014 and that he used what appeared to be a valid Social Security Card.

The AP reports:

The name under which Rivera was hired and paid for the last four years was confirmed by three people with knowledge of his employment history. They spoke on condition of anonymity because they were not authorized to release the information during an ongoing criminal investigation. One of the people said Rivera’s work identity as John Budd appears in official government records. [Emphasis added]

The employer, Yarrabee Farms, declined to confirm or deny Rivera’s work identity. Lori Chesser, an immigration employment lawyer advising the farm, said that companies cannot discriminate against workers based on how they look or how their names sound. [Emphasis added]

That dairy farm where Bahena-Rivera worked owns the property and trailer where the illegal alien had been living and which, allegedly, many Mexican nationals frequented.

Eric Lang, one of the chief executives of Yarrabee Farms, is the brother of Craig Lang, who was the president of the Iowa Farm Bureau. The Farm Bureau has chapters all over the United States, with the goal of increasing the number of low-skilled foreign workers, specifically those on H-2A visas, who are allowed to enter the country every year.

As Breitbart News reported, Eric Lang is also married to Nicole Schlinger, who runs the GOP fundraising firm Campaign Headquarters in Brooklyn, Iowa.

Later, as Breitbart News reported, Lang admitted that his farm did not use E-Verify to check the legal status of Bahena-Rivera, noting that the illegal alien used a fake or stolen photo ID and provided a fraudulent Social Security card. Federal immigration officials confirmed to Breitbart News that Bahena-Rivera is, in fact, an illegal alien.

Bahena-Rivera is being held on a $5 million bond.

John Binder is a reporter for Breitbart News. Follow him on Twitter at @JxhnBinder.