NEW YORK, NY December 14, 2007 —One man was seriously injured this morning at a construction site in Lower Manhattan, after a crane dropped a load of construction materials onto a office trailer.

REPORTER: A spokesman for builder Tishman Construction says the crane was lifting long metal rods to the 13th floor of Goldman Sachs' new headquarters near Ground Zero. Patricia Lancaster is the city buildings department commissioner.

LANCASTER: The sling that was holding the load appears to have snapped. the buildings department, forensic engineers and architects are doing an investigation and interviews as we speak that will be ongoing for some time to find out what happened.

REPORTER: Lancaster says construction at the site will be shut down until it's considered safe. The injured worker, an architect, was rescued from the trailer and taken to Saint Vincent's Hospital. Firefighters say his injuries were serious, and that he was talking as he left the scene.