SAN FRANCISCO (CBS/AP) — San Francisco’s public health department has declared the Occupy San Francisco encampment in Justin Herman Plaza a public health nuisance.

The declaration came on Thursday, though city authorities so far are allowing the demonstrators to remain in the plaza.

READ MORE: Police Searching For Missing Belmont Teen With Mental Health Issues

Barbara Garcia, head of the city’s public health department, said the grassy area being used by the campers has been found to contain feces and have inadequate toilet facilities. Conditions for the spread of respiratory illnesses have also been present, and animal control officials have warned about the spread of canine illnesses.

READ MORE: COVID: FDA Expected To Authorize Mixing Moderna, Johnson & Johnson Booster Shots

Mayor Ed Lee had given the protesters until 4 p.m. on Thursday to reduce the number of tents at the camp to no more than 100 from the 200 or so there this week. But there were still more than 100 tents there after the deadline.

Protesters feared that they would be evicted overnight, but the camp was not raided.

MORE NEWS: UPDATE: Mystery Hero Rescues Man Trapped In Burning Building In San Francisco

(Copyright 2011 by CBS San Francisco. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)