Camp is aware of police on there way and taking up positions. About 350 occupiers there now. They are calling for supporters to come to the park.
Caller at the scene reports police starting to form perimeter. Large mass of police seen at Broadway and Temple.
Crowd loves fireworks show.
Close to 500 people there now with more coming in.
All streets around City Hall now closed to motor traffic.
Caller reports at least five tree sitters seen so far.
Reporter at the scene sends pic.
LAPD on tactical alert.
Huge containment area: Broadway to 101 to Alameda to 3rd Street.
First Street between Main & Spring now filled with close to 400 people.
people still holding intersections on 1st St