Ice plunging from a building roof in Manhattan prompted NYPD officers to block off sections of several Midtown streets.
Police have 57th and 58th Streets between 5th and 8th Avenues blocked off.
7th and 6th Avenues from 57th Street up to Central Park South are also closed.
Alternate routes have been opened up for cars and pedestrians.
This comes after reports of several injuries and smashed car windows.