A leading spokesman for WikiLeaks, the whistle-blower website, is quitting, citing organisational shortcomings and clashes with the group's high-profile founder, Julian Assange. Daniel Domscheit-Berg, who was known as Daniel Schmitt while acting as spokesman, said WikiLeaks has structural problems stemming from its rapid growth, the German magazine Der Spiegel reported. WikiLeaks was thrust into the international spotlight earlier this year when it released some 76,000 pages of classified US military documents related to the war in Afghanistan. "Because of the high pressure we have all been under following the publication of the American military documents, we have not been able to restructure our organisation accordingly. This has created a situation in which not all of the work is being done correctly, and that is overwhelming the project," Domscheit-Berg said, CNN quoted Der Spiegel as saying. "WikiLeaks has a structural problem. I no longer want to take responsibility for it, and that's why I am leaving the project," he said. Domscheit-Berg is one of a handful of people to have spoken on behalf of WikiLeaks, as the task typically falls to the website's founder, Assange.Domscheit-Berg said he had clashed with Assange over what he saw as the founder's increasing concentration of resources on fewer and larger leaks, and over whether Assange should take a more back-seat role following the rape and molestation allegations made against him in Sweden last month. "In my opinion it would have been best if he (Assange) had pulled back a bit so that he could quietly deal with these problems. It would have been fine if he had continued his normal work out of the spotlight. But he clearly saw my internal proposal as an attack on his role," Der Spiegel reported Domscheit-Berg as saying. According to the magazine's account, and a posting on Wikileaks' Twitter page, Domscheit-Berg was suspended from the firm about a month ago. "Julian Assange reacted to any criticism with the allegation that I was disobedient to him and disloyal to the project. Four weeks ago, he suspended me -- acting as the prosecutor, judge and hangman in one person," Domscheit-Berg told Der Spiegel.