Russell Craig, head of communications at Manchester Airport, said:
"We are certainly not proud about what has happened, and that is why we and the airline are doing an investigation."
"We have to get to the bottom of it," he added.
More top news
Tony Poole spent 13 years in jail for a murder he did not commit. Now he faces going back after being found guilty of killing his best pal.
The RFU has issued a two year ban to fans who hurled homophobic abuse at referee Nigel Owens at a recent England international.
A mother who told her son she was going to the supermarket - before flying to Australia - has been given a six-month suspended sentence.