Explosion in Pueblo

Just a few hours ago I heard that there was an explosion at the C St. by Union Ave downtown of Pueblo Colorado, this is a very historic area and in fact this is where Obama had his rally last November 1, 2008, they said it might have been a gas leaked but the Pueblo fire and police department said they are not sure what was the cause. The strong building is totally flattened, they rushed few workers in the hospital right away and so far I think one died, but as of this moment it is still very early to confirm everything.