Occupy activists were granted a permit allowing them to establish a teepee and table at the plaza under certain conditions -- including that the vigil area not be used for lodging, be kept clean of litter and debris, and be taken down between 10 p.m. and 6 a.m.
The vigil area, which is marked with a chalk outline, has been at the plaza for more than a month and city officials have continuously renewed the permit, according to Phil Horne, an Occupy Oakland legal representative.
Protesters received a notice from police today that said their permit has been revoked effective immediately.
The notice claims that the permit is being revoked because of violations of permit conditions, which "create a threat to the welfare of the public."
"Recent and repeated incidents have demonstrated that the teepee and table attract nuisances and illegal activity," the notice said.
The notice comes after a series of arrests at Frank Ogawa Plaza and confrontations between protesters and police on Friday.
Ten protesters were arrested at around 2 p.m. Friday, police said.
Police said the protesters did not allow public works crews to clean the area near their vigil, while protesters claim they were not given time to clear out and officers instigated the confrontation.
Horne said the permit clearly states that the protesters are not responsible for actions that occur outside of the chalk outline and that permit holders must be being notified of any alleged violations and given a chance to fix those violations.
City officials, in response to Horne's objections, said they would reassess the situation.