[UPDATES BELOW] A construction crane has collapsed on the Tappan Zee Bridge, injuring at least three people and bringing traffic on the bridge to a complete standstill.

The collapse occurred at about noon. It's not yet clear what caused the collapse, but winds weren't particularly vicious today, blowing at about 16 miles per hour in Tarrytown as of 1 p.m. (for comparison, the fatal crane collapse in Lower Manhattan this February occurred during 25 mph winds).

First responders were on the scene shortly after the collapse, and the AP reports that at least one person was removed from a car and taken into an ambulance.

According to the Journal News, some people jumped from the span as the crane came crashing down.

The South Nyack-Grand View police chief told the Journal News that the collapse will lead to "a traffic nightmare," and indeed, footage from the scene looks like traffic on the bridge is completely stalled. The barricades on the bridge are expected to be lifted to allow drivers to turn around and travel back to the nearest exits, according to NBC.

Update, 1:40 p.m.: Crews have begun removing the crane from the bridge, and barricades have been removed so as to allow drivers to begin making U-turns and heading back the way they came.

Update, 2:15 p.m.: Five people were injured in the collapse, according to the most recent reports. Governor Cuomo is going to address the incident in a press conference at 3:15 p.m.

Update, 2:55 p.m.: The Journal News is now reporting that the bridge has sustained significant damage in the collapse, with a "punch through" hole in the right-most lane of the Westchester-bound side of the bridge and a hole in the bridge's external guard rail.

Update, 4:00 p.m.: In a press conference by the Hudson this afternoon, Governor Cuomo confirmed that no one sustained serious injuries in the collapse, and that those who were injured—one bridge worker, the crane operator, and people in two cars—are expected to be fine. An investigation will try to uncover the cause of the collapse, and the bridge will also receive a structural inspection to make sure there's no lasting damage. Until that's done, the bridge won't be reopened to traffic—it'll hopefully be done within the next few hours, Cuomo said.

The governor also took the opportunity to tout the construction of the new Tappan Zee Bridge, which he said is the "largest infrastructure project in the United States of America." The bridge has been making extraordinary progress, he said, but "things happen," and "sometimes equipment breaks and sometimes accidents just happen. As simplistic as that sounds. Sometimes that's all there is to it."

Update, 5:15 p.m.: In a second presser, Cuomo announced that the official injury count is 4, and called that "nothing short of a miracle." The northbound lanes on the bridge are now open, and one southbound lane will be open by 7 p.m., with another open by 8 p.m. The bridge sustained what Cuomo called "significant but not extensive" damage on its southernmost lane, and that lane will remain closed by tomorrow morning's rush hour. It's not yet known when that lane will reopen.

Additional reporting by Emily Siegel.