Was it clear why the railing broke?
 "This is a tragedy, and our sincere condolences go out to the family and friends of Ms. Rosoff," he said. "We are cooperating fully with the investigation into the cause of this terrible accident." 

A statement provided to CNN from the New York City Department of Buildings said the agency is investigating and issued a vacate order for all balconies in the building as a precaution.  