The NYPD tweeted a notice to residents in the neighborhood not to be alarmed:
Businesses on First Avenue, between 62nd to 64th Streets, were told to close at 10 a.m. but were allowed to re-open by Wednesday night.
The NYPD put in place a "complete pedestrian and vehicle freeze" on First Avenue between 62nd and 64th Streets while the Buildings Department stabilizes the structure of area businesses.
Project engineers are inspecting the bricks and assessing the stability of the facade.
On Tuesday, the Buildings Department issued a violation and ordered changes at the construction site after hundreds of bricks fell.
Until those changes are made, First Avenue between 59th and 64th streets remains closed. 64th Street between First and Second Avenue also was closed. Police have been at the scene directing traffic.
Workers spent Tuesday night assembling protective scaffolding across the street from the building where the bricks had fallen.
The bricks fell from 340 E. 64th St., at First Avenue just before 10 p.m. Monday. The building is currently under construction and there is scaffolding in place. No one was injured.
The bricks coated the sidewalks and roadway between 63rd and 64th streets. A taxicab's windows were smashed out by the bricks.
Some people reported hearing some kind of explosion, but no explosion was confirmed by authorities. Authorities said the sound likely was the bricks hitting the pavement and street.
A 10x10 foot section of brick fell from the 35-story high-rise building from the 32nd floor. All day long on Tuesday, people stopped on the sidewalks nearby to look up at the area where the bricks had fallen from.
FDNY, EMS and NYPD all responded to the scene.
Stand-up comedian Tom Kelly streamed live video via Periscope from the scene which is now archived here: https://www.periscope.tv/w/1BdGYBwEQQvJX
Tenants remained inside the building as it was just the facade of the building that was crumbling.
The Buildings Department is investigating to try to figure out what caused the bricks to fall.
"Thank God that nobody was hurt and that's the most important thing," said Dr. Romana Farrington, who lives in the block-wide co-op building. But on the 64th Street side, she and others in the neighborhood feared the worst had happened.
"I just heard unbelievable noise. it was like a blast from some bomb or something like that," said Dr. Farrington.
Frightened pedestrians running and flecks of debris can be seen on a local security camera, but no injuries, just the bashed-in rear window of the yellow cab.
The city has issued a violation for failure to safeguard the site to the contractor that was already working on facade repairs at the building, Quality Building Construction of Long Island City.
Quality Building Construction released a statement Tuesday night saying, "What happened had nothing to do with the exterior work being done by quality on the other sides of the building. Quality was not doing any exterior work on the south side where the section of the wall fell. Quality only performed exterior work on the other sides of the building which was totally unrelated to the side of the building where the bricks came down. Quality had all the necessary permits and documents required and that is undisputed. Quality has been asked to assist in stabilizing and restoring the area of the fallen bricks."
The next step will be to put up protective netting beneath the damaged section of wall to guard against any future collapse.