because of "Hazardous Material"The evacuation of a passenger building at Heathrow Airport

The operating company announced in London Monday the closure of a passenger building and evacuated it with the response of the emergency teams to"accident" Its nature has not determined. "Please do not go to the Passenger Building No. 4"Noting that the workers "They help passengers on the site." It is one of the busiest in the world, in southwest London."An accident that is likely to be dangerous"According to a statement carried by the BBC."Publishing specialized crews for the site’s evaluation, and evacuating a portion of the airport as a precautionary measure with the response of firefighters". "Unable" In the passenger terminal as a result." Heathrow Airport that "All other passengers work as usual"