A protest by the Hawaiian Kingdom Government, a group that advocates sovereignty for the Hawaiian Islands, led to a brief closure of Iolani Palace April 30.
According to Associated Press reports, the advocacy group chained shut the gates and blocked entrance to all tourists, employees and the general public. Only native Hawaiians, students and members of the media were permitted entrance to the facility.
The activists said they were reclaiming land of the Hawaiian monarchy.
The conflict lasted about half the day before coming to a peaceful end and the grounds reopened.
The group said it would return on May 1 to protest, but the gates would remain open.