According to preliminary information, the cause of the explosion could be a gas leak
In America, in a residential building, an explosion occurred which led to the fire. On it informs TV channel NBC.
In one of the houses of Philadelphia, according to the preliminary version, was a gas leak, but has not been from of the authorities official confirmation. The blast seriously damaged three houses. After the explosion started a fire.
Under fragments of the house can be people. At the moment it is known about two victims.
As writes the edition, the number of casualties could rise and rescue forces were dismantled and searching under the rubble of people.