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University of Otago management has declined to comment on trespass notices issued against two pro-marijuana students.
Abe Gray, president of the marijuana reform group Norml, and another group member were issued with trespass notices this week banning them from the Union Lawn, the area where group members openly smoke cannabis during their twice-weekly "4.20 smoke-up" protests.
Mr Gray and two other students were arrested by police last Friday after complaints people were smoking cannabis at a Norml information stand.
Otago University Students Association president Simon Wilson criticised the trespass orders, saying it was "ridiculous" students were trespassed from an institution where they paid fees.
Asked by the Otago Daily Times why there was a trespass notice against Mr Gray, university student services director David Richardson said in a brief written reply police had issued the trespass notice so all questions should be directed to them.
There was nothing to stop anyone protesting off campus he said.
"As has been stated many times, the university has no problem with lawful protest. It does have a problem with, and will not condone, illegal activities."