Police stopped seven Black Power and affiliated gang members after reports they were causing trouble around Wellington Hospital.
The men were not fighting, but were loitering in the general area and people felt intimidated, a police communications spokesman said.
It was thought the men, including a fully patched member, were trying to visit a friend who was in hospital.
The incident was reported about 3pm.
Senior Sergeant Mark Chenery said three of the men had been arrested on unrelated outstanding warrants and had been displaying gang insignia.
''It's grown men wearing little fancy colours,'' Mr Chenery said.
He said the men were stopped and interviewed for disorder and breaching the liquor ban, as some had been drinking in public.
In August a law was passed that prohibits gang members wearing patches on council or government property.
Members who break the law can face a $2000 fine and have their patches destroyed.
- The Dominion Post
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