A video has emerged of a passenger on a United Airlines flight being forcibly removed before take-off in Chicago.
The airline says it overbooked the flight, and couldn't get anyone to voluntarily leave the plane. The crew asked four passengers to free up space for staff who needed to be at work the following day, but as no-one offered to give up their seat, the airline choose four passengers at random.
Footage shows a man being pulled from his seat by security officers and dragged along the floor.
United's CEO has apologized for having to "re-accomodate" customers. After much upset on social media, Oscar Munoz said "This is an upsetting event to all of us here at United.
"Our team is moving with a sense of urgency to work with the authorities and conduct our own detailed review of what happened."
"We are also reaching out to this passenger to talk directly to him and further address and resolve this situation."
Earlier the airline had said "After our team looked for volunteers, one customer refused to leave the aircraft voluntarily and law enforcement was asked to come to the gate.
"We apologise for the overbook situation."