"A factory has been destroyed in a massive explosion that occurred in Waukegan, north of Chicago, united states on Friday evening local time. Four people have been hospitalized, reports the Chicago Sun Times."
"Three people believed to have been in the building has not been found yet."
"at Least five other buildings in the vicinity were damaged."
"the Police asked on Twitter all the inhabitants to keep away from the area so emergency crews could work on the spot."
"the Fire was on the morning off. The work to determine the cause of the explosion is underway, said police."