John Harrell
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Florida factory fire: 'More and more explosions'

The cause of a series of explosions at a gas plant in the US state of Florida in which at least seven people were injured is "under investigation", officials say.

They were working at the Blue Rhino propane plant, in the town of Tavares, when the blasts began at about 23:00 (03:00 GMT), blowing the roof off.

John Harrell, from the Lake County Sheriff's Office, said there is "no indication whatsoever" as to how the explosions started.

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