More bad news for United Airlines.

Late Tuesday, U.K. tabloid The Sun reported that a giant rabbit — “Simon,” who could have grown to become the world's largest — was found dead after a United flight from London to Chicago.

“Simon had a vet’s check-up three hours before the flight and was fit as a fiddle,” said Annette Edwards, the rabbit's breeder, according to The Sun. “Something very strange has happened and I want to know what. I’ve sent rabbits all around the world and nothing like this has happened before.”

Edwards holds a Guinness World Record for the longest rabbit, named Darius.

United Airlines said in a statement to the New York Daily News it was “saddened to hear this news,” and that it was reviewing the matter.

“The safety and wellbeing of all the animals that travel with us is of the utmost importance to United Airlines and our PetSafe team,” the statement said.

The airline is of course still dealing with the fallout of an incident in which a passenger was forcibly removed from a flight after refusing to give up his seat for a crew member. And then there was that scorpion.