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Six people hurt in gas explosion Six people hurt in gas explosion
(about 1 hour later)
A gas canister has exploded at a warehouse, leaving six people injured - one in a critical condition and another unaccounted for.A gas canister has exploded at a warehouse, leaving six people injured - one in a critical condition and another unaccounted for.
Emergency crews were called to the site at the Mundells, Welwyn Garden City, Hertfordshire, at 1500 GMT.Emergency crews were called to the site at the Mundells, Welwyn Garden City, Hertfordshire, at 1500 GMT.
Six people, one with life-threatening injuries, were taken to the Queen Elizabeth II Hospital in the city.Six people, one with life-threatening injuries, were taken to the Queen Elizabeth II Hospital in the city.
Another person is believed to be unaccounted for. Crews are searching the building.Another person is believed to be unaccounted for. Crews are searching the building.
A Hertfordshire Fire Service spokesman said 10 crews were tackling the fire and there are gas canisters inside.A Hertfordshire Fire Service spokesman said 10 crews were tackling the fire and there are gas canisters inside.
The Mundell one-way system has been closed.The Mundell one-way system has been closed.
Hertfordshire Police said one of the people taken to hospital was seriously injured and four had minor injuries.Hertfordshire Police said one of the people taken to hospital was seriously injured and four had minor injuries.
A police spokesperson said that at this stage they "could not confirm whether there had been any fatalities".A police spokesperson said that at this stage they "could not confirm whether there had been any fatalities".

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