Oxford have apologised for the launch of a clothing collection branded 'United 93' a week after the 25th anniversary of the Sept. 11 terrorist attacks.
Almost 3,000 people were killed in 2001 when passenger jets hijacked by al-Qaida terrorists struck the twin towers of the World Trade Center in New York, causing both to collapse, and the Pentagon outside Washington.
A fourth plane seized by extremists -- United Airlines Flight 93 -- crashed into a field in rural Pennsylvania after the crew and passengers fought back and prevented it from hitting another target, thought to be Washington's Capitol Building.
Oxford said the Campus Collection range -- which reportedly included an American football jersey and a baseball jersey featuring the term United 93 -- had been released "without understanding of the historical context and associations."
United were founded in 1893 and celebrated promotion to the old Second Division in 1993.
A statement from the League One club read: "Oxford United would like to sincerely apologise for the recent launch of the Campus Collection.
"The range was released without understanding of the historical context and associations. It should not have reached the point of sale and we take full responsibility for not undertaking proper due diligence.
"We have removed the collection with immediate effect and are reviewing our approval processes to ensure nothing like this happens again.
"Once again, we would like to put on record our sincere apologies for this error and for any offence caused."