A police department spokesperson said one of the 57 people injured appeared to be in critical condition.
"People were thrown into the air and onto the ground," passenger Elizabeth Banta told CNN. "There were definitely many people on the ground who were not moving."
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Dr Michio Hirano denied having any financial interest in the experimental treatment considered for the baby.
The measures are set to be included in a court-mandated clean air strategy the Government is due to publish on Wednesday.
Low pressure in the Atlantic brings a spell of wet and windy weather on Wednesday.