After a 10 minute warning, officers advanced on the mix of protesters and homeless people at approximately 3:40 a.m., "moving in lock-step behind a wall of plastic shields," according to the report. Seven arrests were made after minor clashes between camp residents and the police, according to the Times, citing officials.

As the police moved through the camp, which since June has sprawled across a park and plaza to the east of City Hall, officers took down a series of tarps and makeshift tents that demonstrators and several homeless people had been living in and tossed them into city garbage trucks. -NYT

One man was reportedly suffered a medical emergency and was taken away in an ambulance, while police say one officer was injured when he was struck by a brick. 

The operation was approved by Mayor Bill de Blasio, which ABC7 reports "has been long planned by the NYPD."

According to the report, "The stated goal of the "Occupy City Hall" demonstration, a throwback to the Occupy Wall Street movement in 2011, was to cut at least $1 billion from the NYPD budget."