On December 29, 1956, at the height of false bomb reports from theaters, department stores, schools and offices, a note left in a phone booth at Grand Central Terminal reported that a bomb had been placed at the Empire State Building, requiring a search of all 102 floors of the landmark. A 63-year-old railroad worker picked up at Grand Central as a suspect died of a heart attack while being questioned at the East 35th Street station house. Later investigation eliminated him as a suspect.