An employee at an Illinois gas station is no longer employed after he questioned the citizenship of a Latino customer in a racist incident captured in a viral video.

A video published on Facebook on Tuesday shows an employee at a Bucky's Mobil convenience store in Naperville, Illinois, railing against illegal immigration and telling Latino customers that "ICE will come" after a customer threatened to call the police.

The video shows a store patron repeatedly asking the clerk "what is your problem?" after he questioned her citizenship.

"They need to go back to their country — it's illegal," the clerk said, waving his arm in the air.

A spokesperson for Buchanan Energy, a Midwestern company that owns the location, told USA TODAY that the clerk is no longer employed with the company.

Indira Buitron, 15, told the Naperville Sun that she was biking with relatives who were visiting from Mexico before visiting the store to get a snack Tuesday.

She said the clerk asked whether her cousins were adopted, telling them that the food in the store was too expensive.

The video captured the in-progress confrontation and shows the clerk asking at least one person their citizenship status; proclaiming "I'm an American" and telling the customers "you're in the wrong country" as they leave.

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Two family members involved did not immediately respond to a request for comment by USA TODAY.

"A video was posted on social media displaying a Bucky's associate engaged in a confrontation with a customer," said Steve Kalhorn, counsel with Buchanan Energy.

"The comments of this associate are not reflective of the core values of Bucky's Convenience Stores. We are aware of the situation and are managing this personnel issue."

ExxonMobil spokesman Jeremy Elkenberry told USA TODAY that the company does not tolerate discrimination or harassment by any representative of the company and is aware of the incident, but adds that it does not own or operate any gas stations.

Naperville Mayor Steve Chirico condemned the remarks in a statement published to Facebook on Wednesday.

"Let me be abundantly clear: hate has no home here in Naperville," Chirico wrote Wednesday. "Quite frankly, this type of behavior has no place in society at large. Our city prides itself on being open and inclusive to all."

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