The Fire Department says a crane dropped a load of...

The Fire Department says a crane dropped a load of metal beams at the World Trade Center site, damaging a construction vehicle. No one was in the truck when it was hit Feb. 16, 2012. The FDNY says one person was checked out by medical workers at the scene, but there were no serious injuries. Handout photo courtesy of the New York Port Authority. Credit: New York Port Authority

Construction work at the World Trade Center was partly shut down Thursday for an investigation after a crane dropped metal beams 40 stories, damaging a flatbed truck.

The Tishman construction company says no one was hurt in the accident.

Tishman says a cable on the crane snapped at around 10 a.m. The truck had hauled the steel into the lower Manhattan site.

Construction worker Frank Pensabene (PEHN'-zuh-been) heard a loud crash. He says: "Everybody was yelling and running."

Tishman says it is investigating the matter along with the fire and buildings departments, and the Port Authority, which owns the site.

There were some subway disruptions for about an hour.

The accident occurred inside the construction zone at Four World Trade Center.

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