There is no indication that the blast and a fire which preceded it were anything other than industrial accidents, police say.

BBC: Texas Waco fertiliser plant blast search for survivors

There was no indication that the blast and a fire which preceded it were anything other than industrial accidents, according to police.

BBC: Texas fertiliser plant blast: Fourteen bodies found

If the early returns are any indication, where there is smoke, there is definitely fire.

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"It's almost impossible to prepare for that situation if there's no indication of any potential threat, " said Philip Stittleburg, chairman of the National Volunteer Fire Council and the National Fire Protection Association.

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