A controversial T-shirt that appeared on the Urban Outfitters' website was an early prototype and should not have been displayed, Danish clothing firm Wood Wood has told The Anti-Defamation League (ADL).

The T-shirt with a pocket patch that resembled a symbol worn by Jews in Nazi Europe, was described as "a new low" last week. 

But Wood Wood of Copenhagen claims the retailer made a mistake by displaying the early sample and not the final design, which excluded the logo.  

The logo was removed from the final design after concerns were raised about its association with the yellow star Jews were forced to wear during the Holocaust.

"First of all the graphic is not the Star of David, and I can assure you that this is in no way a reference to Judaism, Nazism or the Holocaust," said Brian Jensen, the co-founder of Wood Wood.

Abraham Foxman, ADL national director said: "We are pleased that the company recognised early on the shirt's potentially offensive imagery and changed the design so the six-pointed star-shaped logo would no longer appear."

Last week, in a letter to Urban Outfitters chairman, president and CEO Richard Hayne, ADL regional director Barry Morrison, described the T-shirt as a new low, and urged Urban Outfitters to remove the T-shirt from its website.

"We hope Urban Outfitters will act immediately to remove the image from their site, so that no one else will come across the earlier prototype of the shirt, which never made it into production," said Foxman. "We have notified them again of our concerns."

The teen fashion retailer has not yet responded to requests for comment.