The 102-year-old building was being gutted when it fell down Monday afternoon.
Construction workers were taking down interior when workers noticed plaster falling from a wall. The building's front wall soon fell inward.
One firefighter suffered a broken leg when debris fell on him as he left a nearby building.
The $8.5 million planned restoration would have brought the theater a new stage, orchestra pit, concession booth, 700 seats and electrical and sound systems.
Information from: The Press of Atlantic City, http://www.pressofatlanticcity.com