Oxford United have apologised after launching a clothing range titled 'United 93' around the anniversary of the 9/11 terror attacks.

The club, which plays in League One, said it removed the collection with immediate effect on Friday, admitting it was launched "without understanding of the historical context and associations".

The range was designed to commemorate 1893, the year the club was formed, initially as Headington FC before changing to Oxford United in 1960.

United Airlines Flight 93 was one of the four planes hijacked on 11 September 2001, during the attacks that brought down the World Trade Center's Twin Towers and blew a hole in the Pentagon.

The plane was headed for Washington, officials have concluded, but went down in Pennsylvania after passengers and crew members stormed the cockpit and fought the hijackers.

More from Sky News:
Give all FIFA members $10m, Infantino told
'Millisecond' software error caused air traffic outage
Government departments to refresh war plans

The club said in a statement it wanted to "sincerely apologise" for the launch of its Campus Collection which, reports said, included an American football jersey and a baseball jersey.

"The range was released without understanding of the historical context and associations," the statement read.

"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."

The page announcing the launch of the Campus Collection has been deleted.