Delta Air Lines has been slapped with a $50,000 fine by the U.S. Department of Transportation after ordering three Muslim passengers to get off of a flight.

Delta denies the discrimination claims from the department in two separate incidents, however, according to a consent order released by the U.S. Department of Transportation, the airline agrees that both situations could have been handled differently.

According to the order, Delta violated federal statutes that prohibit carriers from discriminating based on the basis of race, color, national origin, religion, sex or ancestry.

Both of the incidents date back to July 2016. In one of the cases, a Muslim couple, traveling from Paris back home to Cincinnati, was interviewed by a Delta supervisor and security officer at the captain’s request after a passenger told a flight attendant that the couple’s behavior made them “very uncomfortable and nervous.”

According to documents released by DOT, a similar situation happened a few days later with a man traveling from Amsterdam to New York.  

Flight attendants and other passengers reportedly complained about a Muslim passenger, but the captain decided to continue with the flight after his co-pilot walked through the cabin and observed nothing remarkable. Delta’s corporate security office also reported the passenger had “no red flags.” 

In addition to the fine, the order directs Delta to “cease and desist from future similar violations,” mandates civil rights training to certain Delta employees and requires the airline to enhance its e-training civil rights program, as reported in USA Today.