The chief of the Kansas City Fire Department held an impromptu late-night news conference Tuesday, explaining the investigation into an explosion and fire that left JJ's Restaurant in ruins.
To hear what Chief Paul Berardi had to say, click on the media player above.
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The National Weather Service says the tornado that hit Moore, Okla., was a top-of-the-scale EF-5 twister with winds of at least 200 mph.