According to the Superficial, French actor Gerard Depardieu, 62, was on a CityJet flight from Paris to Dublin that was delayed on the tarmac when he asked to use the bathroom.
After being told he had to wait until takeoff, he reportedly relieved himself in the aisle.
"I will only confirm that he, in effect, urinated in the plane," a spokeswoman for the Air France-KLM subsidiary told AFP.
The carrier joked about the incident on Twitter on Wednesday morning. “As you may have seen on the news, we are busy mopping the floor of one of our planes this morning," the airline wrote. "We’d also like to remind all passengers that our planes are fully equipped with toilet facilities.”