Emergency personnel are responding to a construction accident at the World Trade Center site, according to the Office of Emergency Management. Apparently a load fell 40 stories from a crane near Cortlandt and Church Streets—and it looks like the load fell on a truck. We're hearing there may be one victim.

The load, possibly a beam, fell from the under-construction Tower 4, which will be 72-stories. A person in the area Tweeted, "Construction workers pouring out of WTC South site into Zuccotti Park as emergency vehicles are driving into the site. #WTC"

Update: Now the 1 train is suspended in both directions between Chambers and South Ferry. They are going to inspect the train tunnel; it's unclear if they'll need to shut down the R to check that tunnel.

Also, one construction worker was injured but we hear he refused medical attention.

Update 11:15 a.m.: Service for the 1 train has been restored. Construction at the site has been suspended as the investigation continues. The Daily News reports that a cable carrying the load snapped.