AUT European Students Association organiser Juan-Pierre Aucamp tweeted about being "worse than Hitler", as well as a joke about the Holocaust that Stuff has chosen not to reproduce.

A Jewish student group is calling for AUT University to conduct a "full investigation" of a controversial group after its leader joked he dreamed of being "worse than Hitler".

The Australasian Union of Jewish Students said it was "very concerned" about the establishment of the AUT NZ European Students Association following organiser Juan-Pierre Aucamp's "horrific, unacceptable tweets".

The association is an off-shoot of the now-disbanded Auckland University European Students Association, which was accused of being a white supremacist group.

However, Aucamp has claimed that the new club was "not a group that excludes people" and was simply trying to "educate people on European cultures".

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Using a Twitter account that has since been shut down, Aucamp made a joke referencing the Holocaust, which Stuff has chosen not to reproduce.

His Twitter profile also read: "One question to ask yourself: are you a feminst [sic]? if so f... off into the kitchen. if not hi how are you today?"

When contacted, Aucamp refused to comment on his tweets.

Steven Hofman, the president of the Australasian Union of Jewish Students New Zealand, said his organisation did not find Aucamp's remarks to be humorous "regardless of intent".

His language "only adds to the discomfort Jewish students already feel in expressing their Jewish identity on campus because of fear of vilification and abuse", Hofman said.

"Given light of these horrific anti-Semitic tweets we have no choice but to call for AUT University to perform a full investigation into the club's activities, including the individual responsible for these comments, and perform all necessary steps to ensure the safety of Jewish students on their campus."

AUT has yet to respond to the Jewish association's demand for an investigation.

In early March, the university said the European association was not an official AUT club and the university had not received an application for official status.

Spokeswoman Alison Sykora said: "AUT's student movement has a rigorous process for establishing clubs and associations and would use this to understand the motives and intention of this group, should they apply.

"AUT is diverse. We have more than 140 nationalities and strive to be a place that welcomes people from all walks of life, from all ethnic backgrounds, and with all religious beliefs, types of ability and sexual orientations.

"We work hard to get the balance right between protecting freedom of speech, and ensuring all of our students and staff have a safe and positive place to learn and work."