New York City police and sanitation workers swept in and cleared out the tents inside Zuccotti Park during an unannounced raid on the Occupy Wall Street encampment Tuesday morning, arresting 70 protesters who refused to leave.

At least 400 New York Police Department officers dressed in riot gear surrounded the park at around 1 a.m. Tuesday. Officers used bull horns to warn the protesters who have been living in the small, privately owned plaza that the area would be temporarily evacuated and cleared of illegal structures, which were described as fire hazards. . .