From CNN:

Police evict Occupy protestors from New York park

First in Oakland, now New York with other cities joining the ranks of those growing weary of the Occupy movement. Early this morning, NYPD officers in full riot gear moved into Zuccoti Park and began evicting the protestors who had taken over the park nearly two months ago. The eviction was ordered by NYC Mayor, Michael Bloomberg. According to a statement from the Mayor's office, the move is temporary.

After the park has been cleaned, the protesters were informed they would be allowed to return, but are prohibited from camping. The prohibition stems from the law that created Zuccoti Park, which states the park must remain open 24 hours a day in order for citizens to enjoy "passive recreation". The OWS movment's takeover of the park has made the park unavailable to citizens wishing to enjoy the park. The owner of the land on which the park is situated requested the eviction citing health/sanitation and fire hazard concerns. The protesters have vowed to return and continue the protest.