A paint-covered crack has been blamed for the collapse of a whirling, dipping carnival ride that killed a 17-year-old girl and injured six others, state investigators said.

An inspection of the "Monster" ride Thursday at the Broward County Fair showed that one of its six arms had collapsed at the spot of a tiny metal fracture, a crack that went unnoticed in previous inspections because it was painted over, said Wally Rich, director of the state's Bureau of Fairs and Expositions.James E. Strates Shows, which owns and operates the Broward fair's midway, purchased the 10-year-old ride in the early 1980s, according to the state investigators.