Police said 73 people were detained. It was unclear how many were still in custody Sunday afternoon.

Some demonstrators had locked arms and sat down in the middle of Zuccotti Park near Wall Street after police announced on a bullhorn at around 11:30 p.m. Saturday that the park was closed. Officers then entered the park, forcing out most of the crowd and surrounding a small group that stayed behind. Police formed a human ring around the park to keep protesters out.