A city engineer raised concerns about the water slides at a theme park years before a collapse Monday that killed a teenager and injured 32 others, the San Jose Mercury News reported Friday.

Nevertheless, the city of Concord issued permits to the attraction.Concord officials said Thursday the engineer's concerns two years ago had nothing to do with the collapse, which happened when 33 youngsters piled onto the Banzai Pipeline. The chute broke apart, dropping some of the teenagers 40 feet.

Park officials said the weight of the teenagers was simply too much for the slide, a contention that was supported Thursday by a Houston engineer hired by the park to investigate.

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